I recently brought a new kitten into my mother's house (I only stay here in the summer). She's only 7-weeks old, and I got her from a humane society. My mother's cat, who is about 3 years old has no trouble with our dog (Spinoni) who was about 2 when we got her, but she hates the new kitten. She hisses and growls and backs the kitten into corners, refusing to allow it near her. She's even being a bit stand-offish with all of us. Searching for a solution I saw all the posts about keeping them separate, but I don't know how plausible that is... and even if I could find a room for her to stay in, is it too late since they've been introduced? Please help!!