The moths get me

The cloud of insects swirled in the air, and I realised they were getting closer. I backed away, but after a few steps I bumped into the whiteboard and had nowhere else to go.

"Just hold still!" Miss Riley warned, "They won't hurt you!"

I felt a light fluttering, tickling sensation all over my body, and suddenly the moths were leaving, going back to their box.

"They... They were just hungry." Miss Riley said, hesitantly. I realised she wasn't looking me in the eye. I looked down.