Well, that sounds similar enough.

[ If he is offended, he certainly doesn't show it. He doesn't have the context of a 'changechild' being used as an insult, just some weird alternate universe fantasy phrase. And at least she still folded him in to the 'human' category. ]

On my world, we just deem it having spider powers and call it a day. Keeps with the theme.

[ gesturing to the spider on his chest. ]