The shock is a whole-body effect: her eyes widen, just a little, her hair trembles like a branch as the rest of her goes very, very still. If she wasn't wearing clothes you'd almost be able to mistake her as a particularly weird branch.

But it passes in a moment, and instead she unfolds her arms, swinging to get some momentum so she can slam a fist into Jon's shoulder - before using it to fold up and swing easily back up to sitting on the branch. Her words are a mutter, bitter and - a little panicked. "Fuck you, of course Mister Know-It-All can see through my fucking Mask."