I didn't feel offended; it's my job (I'm a moderator here) to ask people to stay civil.

I'd probably find it insulting too if someone acted like a little girl was making death threats when in reality it was they who didn't understand her/my language. But the comment never said that. I read it that the girl was trying to protect him, and the phrase in broken Spanish was what he heard—which of course would be in broken Spanish, since he doesn't speak the language. In other words, the comment was honoring the little girl, not insulting her.