After Batman finally killed the Joker you were seen has the number one most insane patient at Arkham and one quiet morning the guards would escort Harley Quinn to the cell next to you and was pissed she got caught and sat in the corner of her cell in silence

Normally she would talk to Joker but with him gone she felt lonely, she felt as if she had no reason to live until she heard your voice coming from your cell and saw you with a small smirk on your face

"What do you want?... Can't you see I'm busy!..."