How about 'I'm sorry. There won't be any available space for you here when the D is final. I'm sure you'll be resourceful and find a place that is fantastic. Good luck!'.
You saying your uncomfortable with it would show weakness. I think you have to have that boundary. She pooped her pants, now she doesn't have anyone to put a clean diaper on her. Oh well, she'll learn the life lessons she needs to by finding her own place.
Does she have a mom/dad that she can borrow money from? Live with? Friends who could help her out?
M46, EXWW46 M15 T17 D20, S19, D13 M - Addiction since 1998 W EA/PA #1 2013/2014 W EA #2 June 2015... BD 1 Big D talk 9/15 BD 2 - EA/PA disc 10/30/15 Served D 1/22/16 Divorced 5/25/16 (yes, that fast!)