As for the kid, as far as I can tell she hasn't been too stressed out. She's been going out to dinner, visiting water parks, hanging out at amusement parks, and so forth. My dad sent me a text that said something like "she keeps us busy." I think that is code for "we didn't think this through too carefully when we invited her to come and visit us."
You've gotta love technology because thanks to video chats (via Google Hangouts) and texting, I've been able to keep up with what the kid is up to this week. Plus, she doesn't get as homesick when she can chat with me and also see me at the same time.
Anyway, it looks like she's been having a great time!