However her hopes are soon shattered when she overhears a conversation between some guards not only confirming the Joker's short lifespan but also a conspiracy to have him killed.
Incident With the Penguin's assistance, Harley Quinn then infiltrated the Bludhaven Police Station where she fought and snuck her way down to the basement to release Poison Ivy from her cell.
Batman then took Harley's 'party list' and Harley tried to punch him.
She was the 's former henchwoman, girlfriend.
She then learned Henry was given one of the transfusion bags of Joker's , and had become a new Clown Prince of Crime; however, he was able to hide the physical changes.
To deal with this psychosis, Harley could have potentially treated this herself by using her own psychiatric knowledge, but that was unlikely.