We have 3 cats, just got a new one and she hates other animals, but is the most affectionate cat I've ever seen when it comes to humans. I need to be able to let them be out together, how can I socialize her? She mostly hisses and is scared of them, not defensive. At least i think that's how she is. I have been able to get them in the same room (one cat at a time) but she still hisses when the other cats come anywhere near her.