Disclaimer: I don't own anything recognizable as part of the Harry Potter universe. It all belongs to J.K. Rowling.
"Lisa!" a middle-aged witch called up the stairs. "I need to talk to you!"
"I'm coming!" Up in her room, a teenage girl closed the book she'd been reading and hurried down the stairs.
"What?" she asked, annoyed that she'd been interrupted.
"Come into the living room with me. There's something I need to tell you." Bewildered, Lisa followed her mother. They sat down on the sofa, Lisa resisting the urge to put her feet up on the coffee table.
"We're moving." Lisa stared at her mother. How could they be moving? Lisa had school; she had to graduate.
"How-we can't- where?"
"Don't worry. You're coming with us. There's a very powerful Dark wizard overseas; we're going to help fight him." Lisa's mother was an Auror, one of the best in America. Her father was a Healer.
"So, why am I going?"
"Because you'll be safer in England."
"What? Are you crazy? Have you freaking lost your mind?" Lisa was completely astounded that her mother would even think of putting her in that kind of danger. She wasn't brave, and she certainly wasn't powerful. The only thing she had going for her was speed. She was pretty fast when running away from danger.
"No, Lisa. I assure you, I'm completely sane." Her mother gave her what was probably supposed to be a reassuring smile, but it just confirmed her thoughts that her mother was insane. "You are coming with us, and you will be going to school there. You are to be enrolled in Hogwarts School of Witchcraft and Wizardry. The Headmaster there is Albus Dumbledore. While he's there, nothing, and I mean nothing, can cause you physical harm."
"Okay then." Lisa had no idea what was going through her mother's head as she said this, nor was she sure that she wanted to know.
"Just, please stay safe. Listen to your teachers, and don't do anything that could cause you harm."
"I'll be okay; don't worry." Her mother smiled and hugged her.
"I know you will." She paused. "I guess I'd better tell you. To get to London- we're flying. Oh- but not on broomsticks-" she added after seeing her daughter's panic-stricken face- "we're going by plane."
"Isn't there a better way? Like, a portkey, or Floo powder, or something…"
"No. We can't attract too much attention. The Dark wizard- Lord Voldemort- would find us. I'm sorry." Lisa just shrugged, unable to speak. She hated flying of all kinds, ever since she fell off a broomstick during her first flying lesson and fell fifty feet. She didn't like heights either.
"We're leaving in two weeks," Lisa's mother said.
"What?" Lisa was shocked. "Two…two weeks? But-"
"Oh, don't worry. We can't bring everything here; the majority of it will be put in storage. Just bring the basic necessities." Lisa nodded dumbly, wondering why her mother could be cheerful about all this, and went up to her room to pack.
The next morning, Lisa woke to a barn owl scratching at her window. She opened the window, took the owl's note, and brought him downstairs. She gave him a bit to drink before he flew off again.
Then Lisa turned to the envelope. Inside was two pieces of paper. One explained that Dumbledore was going to talk to her after breakfast on the first day. It also said that they'd received her transcript and that she would be known as Lisa Emmons instead of Lisa Thompson, her real name. The second was a list of basic supplies for Hogwarts as well as a booklist. None of the books on the list were books she already had, the school uniform was different, and so were many of the supplies.
Lisa pulled out all of the supplies she wouldn't need, except for the books (she was rather attached to books and would never leave them behind) and dumped them into a box. She would bring them into town later and sell them to help pay for her new Hogwarts things.