@Archaron well English is not even my first language
also its not translated by google more like google spews out words that in some contexts are good translations, but don't quite fit in this one so a lot of work is just guessing based on what makes sense and having read the novel
@TUSF: iirc he's assuaging her worries that he might be angry for them acting without his permission or that he might not be willing to accept so many witches at once
so maaaaybe something like "and are they not your sisters? of course I'll welcome them"