Oh god, if Nancy does come visit you, you simply must go out of your way to make it clear to her that this is YOUR home and she should do her best to ACCOMMODATE HERSELF. No smoking. No talking endlessly about herself without letting a word in edgewise. No locking the ferrets up simply because she doesn't like them crawling on her face.

It may be petty, but oh how delicious it will be. But you're right; unless your mom funds her plane ticket, I doubt she'd actually come visit.