The Avis and the Robin (a Teen Titans Fan Fiction)

Everyone knows that Robins family worked at a circus, as the Flying Graysons. That his Mother and Father are dead. But what about his sister?

She's still alive. But they thought each other dead. So what happens when they reunite, but on opposite sides? Can his sister really be Slade's pawn, or does she have what it takes to be a hero?