It wasn't as if Ivy had made a point of hiding the phone. That would be silly. Let him waste all of his ammunition on her, it would make it that much easier for the birds to kill him. It was unwise to underestimate the Joker, anyone from Gotham would know that. She didn't even respond to the carnival music that began to play. It was oddly fitting, the whole clown thing he had going on. But no matter, there were more important things going on. Like avoiding being shot. Whether it was on purpose or not that he missed, she didn't care. She avoided the shooting
Of course, to avoid being shot, one had to move away from the bullets and it appeared as though he had a plan laid out for her. Leading the lamb to slaughter and all that by shooting at her to get her where he wanted. No matter, she had a gun as well and if she could get a shot it, great. If not, at least she'd distract him. As such, the green skinned woman pulled out her own gun and started shooting back at the Joker.
"Why Joker, I never knew you cared."
The comment was said sarcastically as the two continued their bullet ballet. She didn't even flinch as one of his bullets hit her shoulder. It wasn't a fatal shot, she'd be fine. The question was how long it would take the birds to show up and then figure a way in. Which meant she needed to stay alive and conscious to ensure he remained there while they worked on showing up. After all, it would do no good for him to get loose and release the toxins.
Therefore, the new plan was distract and if he got killed in the process, oh well. One thing was certain, Ivy was allowing herself to adapt, that said something about personal growth and all that, right?