I am so sorry to hear about your kitty. I hope that she is granted a perfect healing. Did she ingest some sort of toxin? That can bring about acute renal failure. Or did the vet say it’s the diabetes? All you can do is keep her hydrated, warm, and try to get food into her. From the sound of it, she should probably be on an IV for nutrition until she can handle food.
Perhaps, but 1) we could not afford the $350 a day and 2) she would be alone in a cage. This way, the medicine isn’t perfect but she is in the home where she feels safe with us loving on her, feeding her round the clock, tending to her.