Joker felt a bullet graze his left arm from Ivy's gun but he didn't flinch. He grinned and kept driving Ivy back, not caring if she got hit or not. And soon she was in position. Without a word, a hidden henchman cut a rope and a massive heavy curtain plunged down on Ivy with a loud screech. Behind her was a partially lit corridor through a doorway. Joker kept shooting at her, missing her by inches.
Oh it was clear he was trying to drive her back into the hall. But what only he knew was that the hall was only a well painted mock up. The door was actually to a clear heavy bullet proof glass cage. One way or another Ivy was going in it. If she ran in there herself, a door would slam down behind her. If she was hit by the curtain, his men in hazmat suits would swarm her and throw her in.
Joker wasn't letting Ivy off with a quick death. She was going to suffer. Badly.