One less love One more bat

A young girl gets adopted by Bruce Wayne.
Great friends with Richard Grayson, she's never seen without him. She's scared of almost everything. Her trust is thin. Her hope in anything that's good is nearly gone all because of the lost she went through. And the worst is that she lost every type of happiness or joy after her parents were killed by a common criminal. From there she stayed with Dick when his family and the circus came into town. They took her in but they soon died too. Alone with Dick, this girl becomes guarded and untrusting. She'll only talk to Dick and ignores anyone, including Bruce, who tries to talk to her. Her life could only go uphill from here, right? Try again. Things only get worse as she meets the Joker. Welcome to her story.