"I'm not American, do they not teach Americans that that only works if you don't get caught before you can get away with it?" It comes out with a little bit of an edge despite the placid expression of concern on her face, just enough of a warning sign that someone is actually aware that she could, in fact, get Mac in trouble for doing that, if she wanted to.

If she wanted to. Which she actually does not. But she remembers how it felt to want to. And also she worries he's a little like a badly-trained puppy or ... or, to relive some feelings she'd rather not feel about other people again, like she used to feel about Westar and needs a smack in the nose to remember that he should share what he knows with the rest of the class, sometimes. Only with even less of a concept of personal hygiene. No, that's a terrible thought. Maybe he's just like ... a less reliable Kaoru. Yes, that puts her mind more at ease; now if only there were any decent donuts here, to actually test this theory.

She gives him her most sincere smile. (It is, to her credit, fairly sincere, because she is being fairly sincere about it, despite her growing sense of this whole situation as some sort of utterly ridiculous negotiation with someone probably twice her age who should absolutely know better than she does when it comes to this sort of thing.) "Because sharing is caring?"