She seems to be giving him a bit of A Look at that, although it's hard to tell what exactly it is in response to. Did she catch on to the fact that he was lightly teasing her? Is she just really judgemental about the fact he suggested they even try to force down some of those charcoal-like snacks?

At least the issue becomes pretty clear a moment later. Which is when Alice leans a bit closer to him - but just so she can talk in a slightly more quiet voice without having to try and make herself be heard over the music in a way that anyone could hear.

It's obvious why she's being so hush-hush - something about her definitely looks embarrassed.

"I.. I don't know. How to dance, that is."