The Vet reckoned that Coco was bitten (by.....?) a couple of times, She had an antibiotic injection and a painkiller, and something to go in her food. She was not happy about going in a basket, and after checking that she had come back the the right place, she had a nibble then returned upstairs to her morning rest.
She's put on a lot of weight since she first appeared and although I doubt she'll ever be a lap cat, she's a lot more relaxed about things.
I suspect she has a sense of humour. ! went up the garden earlier to collect her food bowl and check on the go cat and she suddenly appeared on the fence without a sound, she seemed to find it amusing when I jumped