Hi folks thanks for all your good wishes and vibes.
I'm sorry to say that she passed away at lunch time today .
I'd spoken to the vets first thing and he'd said she'd had a good night and looked brighter and that they would do another blood test once the bag of fluids had finished running in. But she went just as the last bit went through. Apparently she just streched out and went very peacefully. Muddle has seen her body but we've now brought him home.
I've given permission to the vets to have a look at her kidneys with the hope that it will give them more information into this problem and help others in the future.
I'll do her a piece in Rainbow bridge in the next day or two once I feel up to it.