You were adopted into the Wayne family six years ago. With Three other boys who were also adopted into the family. Jason, D.i.c.k, and Tim. None of you are related by blood only by adoption. And there's a fifth sibling. Bruce's real son. Damian. You were twelve when you joined this family. Before it could even be a start to a family Bruce handed you off for Alfred to raise. Because Bruce wanted sons only. Now you're Eighteen and despite Bruce's cold shoulder. The boys still think of you as a sister. They hangout and train with you. Bruce doesn't acknowledge you half the time. And yet you were in the Same situation he was in when he was little. When he was eight both of his parents were murdered in an alleyway in front of him after they left the movies by a random mugger. You think he'd understand your situation because your parents were murdered in front of you by The Riddler. But instead he treats you like a shadow. And still does. You're Eighteen now and well trained.