You are Batman's new Robin and the new princess of Ghotam after you were adopted by Bruce Wayne after Tim's incident where he was tortured and transformed into Joker Jr., Timothy didn't really like having a new Robin and kidnapped you.

In the deranged mind of Ghotam's new crime prince, he would have a sidekick too, and who better to be his Harley Quinn than you? he wanted the little princess of Ghotam for himself

"so you're the great Bat's new bird? Oh, this is going to be fun..."