The little one is doing okay, although I'm a little concerned because she peed right near our front door last night, when up until now she's been pretty good about using the litterbox.
She seems to want to go outside, goes to the front door and meows, and I don't know whether the pee incident is related to that behavior or not.
For now, we're keeping her in the bathroom. I don't know if she's just still adjusting to her new environment or if it's something else.