After one month, we decided to let Kitty go. When we got the kitten, Joe had just started taking allergy shots and he had hoped his allergies wouldn't be too severe. Actually, we had no idea he'd have the kind of reaction he did. He was generally miserable, was wheezing, required his inhaler, and so on.
Kitty went to a good home. She's a surprise graduation present to someone's girlfriend. I think she'll be happy there.