He'll just smile because Atticus doesn't believe him and take the cup from him. "Probably three times since she's been here. But I've only stayed with her once more now." Then he'll give him a look at the thing about Kat unable to get sick.

Kat totally can get sick, I actually might have her get sick from whatever Lia gets. But she won't think that Atty will be all cuddly like Mitch at first.