Perhaps it's nothing more than expending a lot of energy requires a lot of replenishment. [ Certainly that's true of her. The more energy she uses, the more she tends to need. ]

As for the why of it, it's not complicated. It's not even about you being willing to help with my hibernation, although of course I appreciate that. Freeing them is important to you. How could I not offer? Getting to hopefully spend time with you afterwards is a bonus.

[ She hums and shoots him an amused look ] Parties are well and good, some of them, for a while, but I don't get the feeling it's quite your choice of activity. What is it you like to do? I can show off anywhere.