[Ren is extremely difficult to scare or even unsettle, which is useful for situations like this. Actually, before he responds directly to her, he seems to get merrily distracted for a moment by said sharp teeth.]

Oh, your teeth are cool... [A bit messy, but then, she doesn't look like the kind of person who'd care for neat teeth.] Anyway, I think more people are probably going to eat the peeled grapes, but having something real is good for atmosphere, right?

[He has not missed the fact that she's putting the eyes on the food table, but he's wondering whether she's going to be straightforward about any intent to eat them.]