If in the future, you ever wish to get another kitty, I have had some good luck with my cats by doing these things. Over the past 30 years my wife and I have had numerous cats, up to five at a time, all cats that spend as much time as they liked outside in the the four seasons of Pennsylvania. They all got their original shots and were "fixed" and that was it, nothing else. We live near racoon, deer, and all the rest, and all has been well. We have always been under the impression that cats can take care of most things. Thusly, most of the cats never were sick, never needed the vet's attention and lived to an average of 18-22 years.
One thing that we think may have had something to do with their good health was this: we steamed a carrot or two every week, smashed them, and mixed it into their moist foods...... worked well in tuna and chicken, etc. About one fifth carrots was good enough. Purina dry was the other food.
Anyhow, I pray for your kitty and I feel for you. They are always your good friend.
So, you never brought them in for annual vaccinations and you feed them carrots...this is very interesting...what is the reasoning behind these two practices? I'm very curious, I have two kitties besides the one that just passed away from CRF...my oldest is 12 and youngest is 5.