She also looks really "schlapp" (LEO suggests "floppy" and "flabby", but that doesn't really fit. Droopy?) and wanted to cuddle a lot. Poor girl.
She also hadn't eaten any solids by the time I left for work, though she's usually eaten at least two small breakfasts by then. Hope she'll be better soon. (And I think it's probably good for her that she's still being nursed, partly; I expect she'll nurse more than usual today.)
Update 17:25: She's running a fever of 40 °C (104 °F), Stella just told me. Poor girl.