I've had Jazzy now for just over two weeks. I introduced her slowly with smells first, then sight through a gate and eventually a face to face. My new cat seemed Okay. But she tried to attack him. So I put them up again. A few days later they were in the same space. She jumped the gate. This time Nyke hissed at her. She seems fine. I separated them behind a closed door. Now I don't know how I'm going to integrate them. I have no help. I was relying on the gate so they could see one another. I'm not sure what to do now. I read you could crate one during interaction but that seems so cruel. I also read that some hissing is Okay. So I'm really confused too. Any advice will be helpful. Thanks!