Thank you guys.
Jane - I asked and she said I could increase it a little bit, she said it comes at a risk of dehydrating her, but I have to do something.
Ruby is going to the vets tomorrow, the vet gave me an option of having her pts or have an x ray (which she probably wont survive.)
I don't know what to do, she is really suffering, but I want to give her a chance.
Argh this is SO hard!!:x :x :x I think I will have to opt for the x ray, then Millie and I can say goodbye to her just in case, but hold on to the hope that she may pull through and there may be an answer. However; if the x ray shows there is nothing we can do I will just ask for them to put her straight to sleep, then she can just slip peacefully away.
This is the hardest decision I have ever had to make!