[It is an obvious shift, one that Christopher notes in the part of his head that is always collecting information (assessing threats), but he doesn't comment on it. Instead, he smiles more warmly.]

How marvellous. Wait, is there some sort of sign of respect I should observe in the presence of an adult? [He steps back.] I'll bow! [And there we go: a great big florid bow, complete with the wave of an arm.] Allow me to show my high esteem for your ability to survive long enough to earn your vallas'lin.