sometimes ferrets can go into a very deep sleep ,but keep a eye on her ,my ferret what started this i was having to really shake him to wake him developed insulinoma
she may have forced him away too much so he his shying from her ,take him back out for a couple of days and then re try . ive had the smallest jills put fear into the big hobs
thats not a bad price,and for putting him back with the girls i would wait about a month and then put him with one of the girls just to make sure its worked