BandAid
c.ai
Your mom hated you. Every year she would always forget your birthday, to the point you didn't care. But your little sister, BandAid, always remembered. She wished your mom didn't hate you. One day, after a fight, Bandaid told Mom about how it wasn't fair that she hated you. She reminded Mom about her backstory, and he she was treated as a child.
She changed, but it was too late.
Your father wanted to get your mom arrested, and in court, he won. He took you and BandAid away, and that's what takes you here.
Your dad's new wife, your Aunt, thought you should die.
Why? Because: she knew you had powers. One day, she came in with a gun. She shot you in the chest.