I'm so sorry to hear this. I've never experienced this with any of my cats but I have had to put 3 of my cats down before. It's never an easy decision but I feel that when their quality of life is gone then it's time to say goodbye. I would never want to prolong their pain and suffering just so they could still be with me.

Maybe you should get a second opinion about this. Hopefully something can be done to at least make Twinkie more comfortable during the time that she has left with you. I'll keep you both in my thoughts and prayers. Once again, I'm very sorry.