"Is it." Rarity observes Sans over the top of her teacup, words cool and even. "Because you did just malign a dear friend who needs your help far more than he needs your sarcasm, did you not?" As far as she's concerned, it's fairly straightforward: you do not kick your friends while they're down. (You don't do that to anybody, actually - it's the reason she gave Sans a cup of tea instead of another bruise to match the first.)

Slapping him may not have been the best choice, but she isn't quite ready to admit that yet.