Got a call right and it still haunts me

Took a call this morning where a kid on the other end was calm; parents screaming in the background. I kept my voice level and got the address out, and the whole thing went textbook. But it's the calm that's sticking with me. That kid sat on the phone like a stone until help arrived, and I can't decide if that's brave or just what some kids are forced to be. Anyway, made it home and broke my rule about checking the news. Just needed to shake it somewhere.