No, nothing like that. It's just... well, here.

[Chie reaches over to take Usagi's hand briefly in her own. Her body temperature is pretty low. Not enough to actually freeze flesh or cause any damage, but enough to be sort of uncomfortably chilly. It probably feels pretty nice in the Calderan heat, though.]

Well, it's good for them to help out too. They're the ones who have to live here, after all.