We told them that they could stay in the current house until it sold. If it sold before bf was done with school (Mar 1) then they could move in TEMPORARILY until he finished school and got a job, or we would LOAN them money to help get an apartment of their own.
bf was ready to move in with us until I pointed out the 80 mi trip to school for him. "Gee, I'd need a tank of gas every day." He drives a worthless pick-up. (No, I wouldn't even trust it to help move.)
Only one daughter left to tell - the one the triggered it all by moving in with her dad.