I can relate to that so much. I really see this in Harry Potter. I really, really do. I love how you wrote everything generally too, everything just ties together so well.
Oh cool! Another person who thinks along my lines of the sisterly bonding between lily and petunia.I even have started a fanart and fanfic about the gap and what petunia thinks. It's not uploaded however.
I love this story. You're a really talented writer!!. Say if you read and review my story I'll get others to come and see yours. I'll go get those people. More will review if you read mine.