Re: queen fell
Well, about a week later, and....
Couldn't find the queen or any emergency queen cells. No eggs, but then I'm not good at spotting them. There was a VERY small number of uncapped larvae, a lot less than there had been when she was last laying, but then she had slowed some. I didn't see multiple larvae. I don't know how quickly a laying worker appears anyway. Otherwise, it seems like a strong hive, full of bees, capped syrup, some uncapped nectar, and, finally, frames of pollen where before none of the pollen seemed to be getting stored.
Do have swarm cells on the other hive, but... they're all on a frame of drone foundation I plan on freezing. Not about to put an entire drone frame full of mites just for the queen cells.
Sea level, Puget Sound, USDA 7a-7b