Poor Rani. I've just left her at the vet with a very high temperature (103º F) and breathing difficulties. It's more than a cold or flu though. They're doing X-rays and blood tests and stuff.
Apart from arthritis, she was given a clean bill of health last Saturday. But in the last two days, she wasn't right and was very ill this morning, hence the emergency run to the vet.
So, just having to wait and see, for now. Today is not a good day.