Hello there! So, as you can tell, I've started a new story. After my adventure writing a crossover Walk to Remember/Twilight story (Only Hope), I'm back to my HP fanfics. I have to warn you that this will be a crossover with Twilight also. I've had this story in my mind for a while and need to get it out in the Fanfic Universe.

Warning: Very AU! Girl!Harry

Same disclosures as always....I don't own HP or Twilight.....I wouldn't be working at a credit union if I did.

--

The dark man swept through the silent halls with a purposeful gait. Clutched in his hand was a letter written fifteen years in the past, a letter that had caused his world to change in a matter of minutes. With only a pause to growl out 'whatchamacallit,' the potions master continued up the stairs to the headmaster's office.

After a knock on the door, the man was called into the room.

"Ah, Severus! What brings you here this evening?" the headmaster asked from his desk.

"Could you explain this?" Severus Snape asked through gritted teeth.

Albus Dumbledore looked down at the item in his potions master's hand. "I see you received Olivia's letter."

"How could you keep this from me? You had no right. They are my children!" Severus whispered until his voice got steadily higher and he was yelling.

"Severus please sit down," Albus said while waving his hand to the chair in front of his desk.

The potions master remained where he was standing for a moment before acquiescing to the old man's request.

"You knew."

A small flash of regret came to Albus' eyes. "Yes."

Severus looked betrayed. "Why didn't you tell me?"

Dumbledore gave a wary sigh before answering. "Olivia came to me a few months after she found out she was pregnant. It was around the time you started spying for the order and had to stay with the death eaters for six months to prove your loyalty. She expressed her worry about the safety of you and the twins."

"So you decided to hide them," Severus added bitterly.

"No, that was Olivia's idea. She knew that Voldemort would kill both the children and you if he discovered their heritage. When she came and explained her plan, I tried to talk her out of it but she wouldn't listen."

"That still does not explain why I wasn't told before this."

"Olivia made me swear a wizard's oath not to tell anyone until you found out. When she was killed on that raid soon after the twins were born, I was afraid you would never find out. Lucky for us, she had a backup plan."

In a rare show of resignation, the potions master lowered his head into his hands and sighed. "How could she do this to me?"

"She was trying to protect you and them. She even placed the children with two of your best friends so you could still be a part of their lives."

Severus snorted at that. "Yes. However, you forget that one of my children hates me."

"Harmony does not know the real you. Get to know your daughter and that will change."

"She will never give me a chance. I've been unfair and cruel to her for the last five years."

"You would be surprised. Harmony is very much her mother's daughter when it comes to forgiveness and love. I've also notice how much she takes after you in her temper and cunning."

"Surely you jest Albus, my daughter is a Gryffindor. She could not possibly be as cunning as you claim if she is a lion."

Albus' eyes twinkled in amusement at his next statement. "Harmony is only in Gryffindor because she convinced the sorting hat to place her anywhere but Slytherin."

"Why would she do that?" Severus asked shocked.

"I believe it was a result of meeting your son, her brother."

"What did Draco do?"

"According to Harmony, he was rude and pompous. He had insulted her first friend and was spurting pureblood nonsense. She did not want to associate with a house full of students who believed the same."

"Draco had to act that way in public since Lucius and Narcissa were spies. I wish they hadn't met that way. Maybe things would have been different if she was sorted where she belonged."

"Now is your chance to start again with both your children. Harmony vanquished Voldemort only two days ago while losing her two best friends in the fight at the ministry. Draco's 'parents' were killed at the same time. Both children need you, whether they know it or not."

Severus rose from his seat. "You are correct. I will be in touch with you soon to inform you of my plans. Goodnight Albus." The potions master then headed towards the door to leave.

"Goodnight Severus."

--

The next stop for Severus was the infirmary to see his children. Harmony was recovering from the duel with Voldemort and the death of her friends while Draco was recovering from the shock of his 'parents' death. The teen had gone nearly catatonic when Dumbledore had told him the news.

When he stepped into the wing, his eyes immediately landed on the only two occupied beds. Both of his children were asleep.

He first walked over to his son whom was sleeping peacefully. He brushed a hand through the boy's blond locks while noticing the dark circles under his eyes. The last two days had been hard for Draco. Severus silently vowed to make sure his son continued to live before he gave Draco a kiss on the forehead and headed to his daughter's bedside.

Unlike Draco, Harmony was not having a restful sleep. When Severus reached her bed, she was in the middle of a nightmare. The potions master started to run his fingers through the long mess of curls while cooing soothing nonsense into her ear.

"It's okay sweetheart, I'm here. Nothing can hurt you. I've got you," became a mantra to Severus until the nightmare went away. Through the entire time, Harmony did not wake up, but did give a smile when the potions master kissed her forehead.

Severus moved away from his daughter and conjured a chair between the two teens so he could continue to observe them as they slept. He examined each face to see any of his or Olivia's feature in the twins. Olivia had explained in the letter that the charms would collapse 24 hours after Severus found out the truth. Throughout the night, Severus began to see small changes in both. For example, Draco's hair was beginning to darken while Harmony's hair was loosing the wild mess that it was before. However, the potions master knew that most of the changes would happen that evening when the charm finally broke.

Eventually, the events of the last two days caught up with Severus and he fell asleep watching over his children.

--

When Severus awoke the next morning, he found that someone had moved him from his spot between the twins to a bed across the room. As he sat up, he was greeted by two sets of curious eyes. Before he had the chance to do or say anything, Madame Pomfrey came bustling into the wing.

"Ah, Professor Snape. You are finally awake."

Snape climbed out of the bed and gave the medi-witch a small bow. "Good morning Madame."

"What had you here last night?"

Severus stiffened at the question. He was not about to explain why he was in the infirmary last night to the medi-witch with his children as audience. The potions master decided to ignore the question for one of his own.

"How are Mr. Malfoy and Miss. Potter doing?"

Poppy Pomfrey knew what Severus was doing but decided to let it drop for now.

"Both children are progressing well physically. The only thing that is really bothering me is the fact that neither child has spoken a word since being brought in. I'm worried how they are taking everything."

Severus nodded. "That is understandable. Both have lost important people in their lives. When will they be able to leave?"

"Well with the rest of the students returning home yesterday, I am just waiting for Albus to find a placement for both teens before releasing them."

Severus looked over at his two children and almost chuckled when they both adverted their eyes after being caught eavesdropping.

The potions master lowered his voice and addressed the healer. "Poppy, Albus will explain everything, but I will be taking care of both Draco and Harmony."

Poppy almost dropped her jaw when she heard the potions master refer to the children by first name and his claim. She gave the man a small nod and set about fussing over her two wards. Severus watched as she gave both students a clean bill of health and released them to shower and change.

When both teens returned to the room, Severus walked up to the pair and instructed them to follow him. The trip down to the dungeons was slow and quiet. Harmony had broken her leg during the battle and she was limping because of it. Severus was tempted to carry her but didn't know how his daughter would respond. Instead, he slowed his pace to match hers.

Once they reached his quarters, Severus ushered the two into the living room and onto the couch. "There is a lot we need to discuss. If you would excuse me a moment, I need to get some things before we begin." Draco and Harmony nodded their agreement and waited for the potions master.

Severus went into his bedroom and retrieved the two birth certificates that accompanied the letter. He also took the letter out of his pocket and placed it on top. Finally, he grabbed a picture of Olivia to show the twins. He gave a deep, mental bracing breath and entered the living room to face his children.

As soon as the potions master entered the room, two sets of eyes zeroed in on him. He decided to take a seat across from the couch the two were sitting on and turned to look at his two children.

"I have a letter I would like you both to read. Afterwards, we will discuss the contents and I will try to answer any questions you may have."

Severus laid the letter between the two fifteen year olds and leaned back in his chair to wait for their reactions.

Draco and Harmony inched closer to the letter and began to read.

Dear Sev,

I've tried to write this letter multiple times, but I can't seem to get the words correct. I hope this letter is unnecessary and I am able to tell you in person, but I am unsure if I will survive this war to have that chance. I've spelled this letter to appear when its save for the truth to come out. First, please know that I love you and never meant to hurt you by keeping this a secret. I was trying to protect you.

You are a father, my darling. We have two beautiful babies, twins: a boy and a girl. They are like you in so many ways. Alexander has your eye color and chin. Arabella has your silkily hair and cheekbones. Both have your stubbornness and temper when tired or hungry. They are the best of both of us.

It tears me apart to know that they have to be separated and will not know us for a portion of their lives. Please forgive me for keeping them from you. I knew what Voldemort would do if they found out about the twins. I couldn't let him ruin our family or take away our beautiful children.

I hope that you have been able to be a part of their lives in some way. I made the two families who took the children promise to involve you in their lives. Alexander went to your best friend, Lucius Malfoy. Narcissa could not conceive due to a misused chastity spell placed on her as a child. It was a secret that has been deeply guarded in the pureblood society. They were happy to take him in and make him their heir. Arabella went to my best friend, Lily Potter. She had just miscarried her son and was more then willing to protect our daughter. Both couples knew that the children would someday be returned to us, but vowed to raise them as their own for the time being. Don't be upset that they never told you, I made them do a Wizard's Oath not to tell.

Once you receive this letter, the charms protecting the twins real parentage will begin to break down and will collapse within 24 hours. Please find our children and be their family.

If you have any questions, go to Albus. He knows everything.

Again, I'm sorry for keeping them away from you. Tell Alexander and Arabella that mummy loves them for me.

I love you.

Olivia Elizabeth Snape.

Severus watched as the twins finished reading the letter. He leaned forward in his seat and handed each a birth certificate. Draco looked down and read his.

Name: Alexander Kai Snape

Father: Severus Tobias Snape

Mother: Olivia Elizabeth Snape

Siblings: Twin sister- Arabella Kolina Snape

Birthday: 27-Jun-1980, 13:05

Status: Alive-Adopted

Inheritance: Vampire-Father, Elf-Mother

Adopted Name: Draconius Lucius Malfoy

Adopted Father: Lucius Nathaniel Malfoy

Adopted Mother: Narcissa Althena Malfoy

Adopted Chosen Godparents: Severus and Olivia Snape

Harmony followed her brother's example and looked down at hers.

Name: Arabella Kolina Snape

Father: Severus Tobias Snape

Mother: Olivia Elizabeth Snape

Siblings: Twin brother- Alexander Kai Snape

Birthday: 27-Jun-1980, 14:52

Status: Alive but injured-Adopted

Inheritance: Vampire-Father, Elf-Mother

Adopted Name: Harmony Jane Potter

Adopted Father: James William Potter

Adopted Mother: Lillian Victoria Potter

Adopted Chosen Godparents: Sirius Black and Olivia Snape

The room remained in silence as both teens tried to process what they've read. Their entire existence had been turned on an axis. They barely noticed the potions master as he placed a single photo on the table between them.

"This is your mother. She died about three months after you were born."

In the photo was a young woman with dark brown curly hair and deep green eyes. She was twirling around in a light green summer dress while flashing a huge smile at the camera. The twin became entranced with the picture.

Severus cleared his throat to get their attention. "Do you have any questions about what you read?"

The twins glanced at each other and seemed to come to so kind of silent agreement.

"Is this real?" the blond asked quietly.

"Yes, I found out last night and ran the appropriate tests before going to Professor Dumbledore."

The twins simply nodded their heads.

"What are we to call you?" Draco asked for the both of them.

Severus leaned back against the chair and crossed his legs as he thought of the answer. "I hope in the future you will be comfortable calling me father or dad, but until then, you may call me Severus."

Again, the two teens only nodded.

"What would you like me to call you two? If you want, I can continue to use your adopted names, or I can use your birth names."

The twins looked at each once more in silent communication. Severus could almost swear they were talking to one another in their minds. He knew twins shared a mental bond, but he was unsure if the twins' bond was strong enough for that.

"We want to start over and be who we really are. Please call us by our birth names."

Severus let out a breath he didn't know he was holding when Draco spoke their desire to use the real names. He was happy his children wanted to get to know him and start over as a family. However, he was worried that his daughter hadn't said a word since finding out. Severus rose from his seat and kneeled in front of his child while placing his hand over hers in her lap.

"Arabella, sweetheart. You haven't said a word yet. Are you alright?"

Arabella looked down into her lap and whispered, "I'm fine. I just need some time to think. May I be excused?"

"Of course," Severus said while standing up to let her by.

Arabella stood up and walked towards the room Severus first entered before showing them the letter. The potions master didn't have it in him to admonish her for entering into someone's bedroom without permission and let her go.

"Don't worry about Ari, Sev. She'll come around."

Severus looked down at Alexander and arched an eyebrow at the nickname his son gave his daughter. "How do you know that?"

"I just do," his son answered. "So, what are we going to do now?"

Severus sighed. He had been asking himself that question all day. "I don't know."

AN: Next chapter I promise will have the Twilight gang in it. I needed to establish the beginning background first. I know some will think that the twins are acting too easy-going with the discovery of a family, but all will be explained in the future chapters....as well as some strive....HP cannot be without some! Please review and let me know what you think.