If this wasn't such a serious situation, Reggie might have laughed when she said something about stealing crayons, too. He might be slightly amused by it later, when people weren't struggling for air. "We're all locked up in here together. She can't really 'get away' other than to her bedroom," he pointed out, still managing to hold onto her for now.
"And I'm not letting you go until you calm down, so stop thrashing about," he said to her. This was insanity. "Besides, you can request more crayons if she takes off with them." Really, over crayons? That was just currently blowing his mind a bit.