I have read the sticky on this topic but my kitten(female also) has already invaded the resident's territory because I allowed her to (didn't do my research until now! :/ ) So she knows that the kitten is here. My older cat hisses and growls at her if she goes near her. Since the kitten has been here (couple hours) my older cat has just layed on the bed and she hasn't really moved. I am now keeping the kitten in my master bath so they can sniff eachother through the door. As soon as I put the kitten in the bathroom my older cat felt comfortable walking around again and she even went up to the door crack but when the kitten came near the crack the older cat hissed and growled again.
What should I do next? Is this still going to work since the kitten has already been around her territory?
What should I do next? Is this still going to work since the kitten has already been around her territory?