Mary I agree fully with you- for a cat at the end of her life you really have to decide through how much therapy you want to put her. As we know renal failure cannot be cured and I know that Filou would not like a life that gets him to the vet daily. He is now fine with going one time per week but you should see how he always jumps in the carrier from the table when he thinks it's time to go back.....
Let's hope you can get Puddy to be in hissing mode for some time with the iron.
Hugs....