[Her hand comes up to cover her mouth before she can stop herself, and she tries to smooth it over into a pose of contemplation for the sake of the other guests. Because even though the rest of the restaurant is ignorant of the happenings under her table, it certainly doesn't feel like that to her, as she is more than entirely focused on it.]
That tickles!
[She chances that quick whisper after she unintentionally lets out a giggle, her foot kicking out slightly. It won't do for her to be talking to herself and attracting any attention, though, so she presses her lips together after that and pretends to study the menu.]