I am so upset over this and don't know what to do. I brought in a new cat/kitten, adding to my house a third. I read up beforehand and have done everything I was supposed to do. I.e. created a safe place for the new cat in a separate room, keeping her closed in there - away from the other two cats. Well, when I first brought her in, in the cat carrier, my nicest cat, Cali, was sitting on the coffee table so I thought I'd just show her to her. I really didn't think I'd have a problem with Cali, just Lilly. So Cali starts hissing so I take the kitten to her safe place where she's been ever since. Well this was last night. Well Cali is completely distraught, hissing at everyone including her sister Lilly. She's hiding under chairs and tables and growling and hissing. She's NEVER acted like this and I'm afraid she'll never come around to the kitten. And why is she now acting out and hissing at her sister? I'm so confused and don't know what to do - PLEASE HELP!!