Firefight

She stepped toward it, as if drawn by its heat. Then she screamed and ran forward, passing me and thrusting her arm into the flames.

Megan collapsed. Tavi vanished. The rents in the air shrank away. I let out a relieved breath and managed to crawl over to Megan, dragging my pained foot behind me.

> > [...]

Fire. Her powers were negated. She was always without them for a minute or two after deliberately burning herself.

Page 273, Chapter 33, Calamity