Kate was far behind the others. Her chest fought to rise and fall. The backlash of the spell was taking it's toll. She began to cough violently as she made her way to the exit. The noise signaled to the demon that she was weak, easy prey. He turned off his course behind Peter and made his way towards Kate.
She pulled the small vile of sulfur from its place on the chain around her neck and emptied it's contents into her palm. As cut off her path she clapped her hands together sending a current of blue flames into the demon's face. It screams were annoyed more than pained, but it gave Kate enough time to maneuver around the beast and continue on to the exit.