My cat was a rescue kitten from 2 weeks old. He began licking himself and biting himself until he was bald in spots and had scabs. This occurred when he was about 9 months old. I took him to the vet and he advised nothing was wrong with him other than he had a mental issue. He placed him on a pill called Ovaban and said that he would need to take one everyday for the rest of his life. It was for obsessive compulsive disorder and was also used for animals that believed they were pregnant when they weren't. I religiously gave him his pill daily and slowly tryed to wean him off, giving the pill every other day, three times a week, two times a week and he began with doing it again. I since have had him neutered and then tryed to take him off time and time again weaning him off slow. He is now 4 years old and has been Ovaban free for over a year. Might be worth checking out if he has suffered trauma, she may be having issues.