Reaper

Ailith lived in the middle of Gotham's dirtiest, most violent streets. Never knowing what her last name was, she used the district location, East Gotham to fill in the gap where a family should be. But just because she doesn't know of any blood relatives doesn't mean that she lives alone. On the street, she found a fellow nobody, her name, Romani Jane Brown. The girls have a motto, "if we don't agree, don't do it" and they use it for everything, finding food, going down alleys, even conversing with the Villains of the Capital of Crime. The two will never be beaten. Until Raze Ah Ghoul decides to do the duo over and instead of sharing in some money, kidnap the girls and tern them into guineapigs for the Doll Maker.

This is how she changed, how she became the Reaper.