And then that smile quickly vanishes. Top way to get to Strange's shitlist: threaten his wife. It doesn't matter that Tyki's statement isn't actually threatening, this conversation's gone in so many different directions already that Strange is interpreting it as a threat.

"If you harm one hair on her head, no matter if we're still at this damned ball or not, I'll turn you inside out myself."

It's a heavy threat, especially coming from Strange. But dammit, he did so much to bring Arabella back to him: madness, getting cursed, bringing magic back to England, summoning the Raven King. Of course, some of those actions weren't just to find a way to reunite the two, but everything, even bringing magic back to England itself, was partially to do so.