She decides to retreat

Erin realized that her position was dangerous as the midget swarm could easily hide in the balloon covered room. And she couldn't chase down the villain unarmed. With a curse towards the fleeing villain, she turned towards the door she had entered the room from and moves towards it as fast as the balloons let her.

She quickly ran into a midget that tried to tackle her, but this time she was ready and expertly leaped over the tackle, turning her lithe body as she landed to deliver a kick that knocked the midget down.

As she turned towards the door another midget, this one holding an air horn, came at her, and for the first time she started wondering if she had the numbers right. All of them were dressed as the Joker and it was impossible to tell them apart at a glance.

This thought occupied her mind as she grabbed the midget's arm, redirecting the air horn, as green gas blast expelled from it along with deafening noise, and punching the midget twice in the face.