To my surprise, she immediately became a much happier kitty. She will let us pick her up and carry her around, she will even let some people go near her. But not Joy. She hates Joy, we have no idea why. And she hates most strangers. She is evidently aware that she can't do much damage so now instead of trying to lure people in she just growls threateningly when someone new approaches. And she might bite you. Hard.
But here's the point of all this. Max loves Kate. Kate pokes her, pulls on her tail, rubs her belly, lays on top of her and screeches with delight in her ears. From day one, Max has had nothing but somewhat indifferent tolerance for Kate. For Max, that amounts to unconditional love. It brings a tear to my eye, I tell you. Each day when she gets home from daycare Kate runs over to the kitchen table (we feed Max up there so Lola won't eat all her food. Don't worry, we don't do any food prep on it anymore) and says "I want to go up there!" Up she goes while one of us hovers near-by, waiting for Kate to tumble to the floor and burst her skull wide open, spilling brains all over the tile. There she torments Max in ways no other sentient being would dare. And Max just hangs out. Purrs, even, sometimes. I guess wonders really never will cease.