Werewolf's Sister

Piper was just an ordinary girl....or at least that is what she liked to think. She had no parents, they had died in a car wreck, and she was raised by her big brother. Nearly 23 years older than her, her older brother was more like a parent than a big brother. What happens when Harry comes into the mix? This is Piper Lupin's unusual 1st year at Hogwarts.(I don't own Harry Potter. Rights go to J.K rowling.)