The cats are getting along beautifully now. They even play with each other, which I never thought Simba would do. Even as a kitten she wasn't big on rough-and-tumble play with other cats so this was a pleasant surprise. She's getting real exercise again, and it seems her cystitis has gone away. She's more relaxed than I've seen her in a while, not least of which, I'm sure, because she now has somebody to keep her company when we're not home. Anubis is much the same. He still wants to spend time with daddy, and she still wants to spend time with momma, but they're not as desperate when we first get home now.
Today, though, we had our first miscommunication in a while. Simba seems to have a little bit of a bug - started getting a bit sluggish about the same time we did, when the weather changed to cold quite suddenly. Even indoors she feels it. Well, Anubis wants to play and with Simba not feeling well she kept trying to slink away from him quietly after a minor slap-fight by the box (which by the body language was play - she ran with him a couple times but she can't take much right now so after the little playfight she was done). He wouldn't take the hint - kept trying to chase. He cornered her under the window seat and she hissed at him. I had to remind him that means enough and it's time to be done playing for the night. So she made her way over to me, glanced at him a few times with that look she gives me when she thinks she's upset me and didn't mean to, so I reassured both of them and told him next time to listen when she says she's done. I know that last part sounds silly but he does understand a certain amount of human speech, and the tone clues him in to what I'm getting at if nothing else.
I'm trying to teach Simba now that he's learned her cue for being done with play is jumping onto the arm of the couch and curling up. If she does that he seems to leave her alone.