She should drink her own urine, if possible, but in case you can't collect it you can try your own urine.
It is wonderful that you never stopped her from drinking her own urine. Don't be too hard on yourself. We all do the best we can with our animals.
I feel for you, I am always torn how much medical intervention to do for my dog.
He had 2 leg surgeries and after the last one I promised him, never again, it is so traumatic and they don't understand that we are trying to help them.
From now on I will just make sure that he is comfortable with whatever he gets.
I can feel your pain.
hanna