It’s been long enough now that Smokey and Missy are getting along pretty well. They still have some spats, but they mostly keep it civil. Here’s what it was like the first night Missy arrived after her trip. Smokey spent a lot of time stalking her and staring her down. She’d then hiss (I’ve only ever heard her hiss once prior to this) and sometimes run off. I was concerned about them both, so I kept a close eye for hours into the night. Panda and I ended up sleeping in separate rooms so both cats would have someone with them.
Eventually we settled in for bed around 3, though Missy decided hiding under the bed felt more safe than being in it. Maybe she didn’t know that Smokey was stuck on the other side of the door.