She's glad she's already smiling. She does fail to look suitably horrified by the comment though, if that's what most would expect, instead entirely unbothered by the suggestion.

"Percentage? I have no idea. A fair amount, but that's people for you. Some will use it to kill, some will use it to save others. Or to cook, clean, copy books, and so on."

Caedra has to admit, magical cleaning is very useful when you need to cover for some of the other uses.