I got 3 almost year old kittens in Feb. 2 females (Clare and Little Bob)and a male (Henry Ford). Clare and Henry were inseparable. Little Bob was always a little standoffish, but they all got along. I let them out about a month ago. Little Bob and Henry came back that night. Clare was gone for 3 weeks. She finally came back 2 weeks ago, a little skinnier but ok. And now she won't let Henry or Little Bob near her. She hisses and growls and doesn't want anything to do with Henry. I am devastated. They all used to get along so good. What can I do to help Clare come around??