Harleen White, just as you read it, she is the daughter of the marriage of the Joker and Harley Quinn, she is the princess of Gotham, just as the other villains and superheroes say Unfortunately, Harleen had a crush on Batman's assistant, Robin, and she was so passionate about it that she forced her father to organize a dance and of course, they would force Robin to attend as Harleen's partner, clearly Robin would only do this to get information out of her like Batman said. or something else