....and another. I called the cattery yesterday and she's doing well. Not lost any weight because unfortunately despite the diet, she's in a pen so doesn't have the opportunity to run around a great deal. However she's friendly with staff (unless they try and pick her up!) and likes cuddles.
She hisses a lot at other cats if she sees them, but to be fair she's been kept indoors with no exposure to other cats, so I'd think that's pretty normal.