Hello, new to this site...my family and I currently have a 5 year old torte(female/fixed) her name is Beans. Tonight we picked up a kitten that is 8 weeks old, I prepped by reading other forums, we put the new kitty in the bathroom with food, water ect, we have not introduced beans to her yet. I have sat in there and she hisses and is very low to the ground...I'm not pushing myself on her, any other advice is this normal?