Changing The Game

This story is about a girl named Alli who one day goes to school, and sees a new student. At first she think she's okay; but suddenly changes her mind when she gets into two fights with Terra and Terra gets both of Alli's sisters taken away. After getting both of her sisters back, she wants revenge. She goes to extreme measures and ends up accidentally killing her. She runs away and finds herself in even more trouble. Will she wind up getting killed too?