Gotham's Angel of death

Brianna has been through more than you could imagine. From child to adult hood. She has lost so much, and has felt so much pain that most people would find unbearable. But Brianna fought through it. Beating all odds, and in the process found people to love. Having Bruce Wayne as a close friend, and most of the robins as her friends. Well I think you could guess she has a pretty interesting life. But of course...
There's always something that comes along and makes it even more interesting.