It turns out sox IS unhappy as she was being very combative when I got back. Possibly from not being allowed full range of the apartment, but something's happened to an eye while I was out - isn't opening to the full extent and there's a small amount of dried exudate from the corner of her eye. And she's been tetchy and swishing her tail and when I tried to give her some bupenorphine to ease her until tomorrow, it was an epic fight. Loud hissing, full on teeth and claws, REEOOWWW!!!!!s - constantly attacking my hands - never been this bad. Poor puss, I can't figure out what hurts in her body and I can't get enough of a look at her eye to see what's going on exactly.
Anyway, whatever devil magic is in Churu, it solves all - she climbed onto my lap eagerly for that kitty crack and despite still being uncertain she finally allowed me to get the bupe in through the corner of her mouth. I think. Such a small amount, it might have dribbled down a corner and as I had to get to her under a small table I couldn't really see.
Have to look at the eye situation again in the morning...