indy, I wish i had some great words for you about your little cat. Maybe you could make her a shelter outside that is good for cold and hot? but honestly, sounds like she likes to be indoors and that isn't working well either. It has taken a few years but now my #2 cat and #3 cat have finally come to a truce. I make sure #3 cat does NOT trespass on the part of the bed #2 prefers, I really treat her like she is beneath the other cat, she accepts that (to me; unfair!) treatment, and they are actually getting along now. no love, but the screaming, carrying on and hissy fits are gone. So TIME? I'm sorry about your husband's short rope. My husband (who brought home #3) was amazingly oblivious to all the rancor caused by the new cat.