Heartless (Reyes Series#1)

Amara Rae Reyez, an accident take both of her parents lives. That's why her Aunt Beverly is the one who took her and take care of her. But her Aunt Beverly abuse her. But an accident happen to her and they found out that she's adopted and she knows it, she even know her biological family. But why did she let her Aunt Beverly abuse her?, she can move out and go to her true family? Why?