Cats not getting along
I have had cats all my life, and they learn to tolerate a new one, but I have a different situation that has gone on for over a year and now is taking a turn for the worse.
I have 4 cats, Lily, Cali, Minnie LaRue and Amy. We got them in that order. Lily is my old lady, she accepted Cali but doesn't play much so Cali attached herself to Frank, Lily's brother, and they were best friends, wrestling and chasing each other everywhere. Frank died of heart failure in Feb 2010, and Cali was lonely, so I found a little beastie at the Humane Society and named her Minnie LaRue. She and Cali are now inseparable, Minnie worships the ground Cali walks on.
Amy was a stray that I found at work and came home with me just over a year ago, but she was very pregnant and very protective of her condition with the other three cats and, when the babies were born, protective of them with the other cats. She would let us do anything to the kittens, and she would curl up in our laps while we sat on the floor in her room with her babies. This did not earn her brownie points with the other cats.
Now all the kittens are gone and she is so mellow and wants to be a part of the action (she is only a year or so when she got pregnant, so she is still a kitten) but Cali and Minnie LaRue gang up on her and Cali chases her away from everything she does. I was the "bad" parent who, after she kept scratching her mite infested ears, would put in the medicine and put the cream on her head where she scratched herself bloody, and she wants nothing to do with me. I am sad, but I would rather be the bad parent than my husband who she adores. She follows him around and lays with him on his chair while he watches TV. At first we let her sleep with us, but that wasn't working out (she dominated a King bed with both of us in it!) and she needed to be socializing with the others, so she has the run of the house with the others.
The problem is, I think she gave the wrong impression to Cali when she chased her off when she was pregnant or with the babies, and now Cali chases her away from everything, from food to using the litterbox, Cali terrorizes her. We reprimand Cali and Cali does stop as soon as we yell at her to stop, but Amy is just frazzled. Except for her time with my husband, she hides all the time now. She does use the litterbox and does eat, but she is now overweight because she can't play and run like a cat needs to do.
How can I help these two get along? It isn't Amy, it is mostly Cali being nasty just because she can. And don't bother suggesting Feliway, we tried several times, no luck.