It was polite, yes, but there was also the pragmatism of not wanting to waste perfectly good cake on someone who didn't want it. Corbie smiled and passed him the plate and a fork. "Yeah, I'm an only child--least as far as I know--but it seems pretty true of what I've seen between siblings." Felix and Mildmay in particular were superficially very different people, but in order to be as close to them as she was, she'd needed to understand the two of them as individuals and as a unit.