First off I'd like to say a big thank you to all of you who left lovely comments about little Kerby.
Sadly our 'be OK' vibes haven't worked because after initially getting the all clear from the vets things took a turn for the worst and the only kind thing to do was to have her put to sleep.
At first the vet thought that her leg was the only problem and so she was given pain killers and she was wormed. She was eating well and seemed to be a happy little thing but half an hour before I was due to bring her home I got the call to say that whilst they were getting her ready to be collected they had noticed that her back end was abnormal and that due to her age an operation would certainly kill her (and it probably wouldn't have worked anyway). So the sad decision was made and she went gently to sleep.
Although she was only with me one night I feel really sad for her (it did turn out that she was a she), it's awful to think that someone was too bone idle to get her looked at and cared for, but then I guess that's just the world we live in.
As a result of this drama I've decided to rescue another cat. I've put my name down on the vets re homing list and I may well pop along to the cat's protection centre and have a look. So watch this space...xxx