I am sorry to hear you are so worried about your cat. I am a veterinarian and will do my best to help. My name is Rebecca.
It sure would help to see the results of her blood tests, and learn what was high besides the white blood cell count.
14 is old for a cat, but some cats live to be 20 or older. So, it is possible for her to recover from some diseases. Some liver diseases, infections, pancreatitis, and other conditions can get better. If she has cancer, or chronic kidney disease, she probably will not.
If she is not eating, you need to keep her hydrated by offering broth as well as water. There are appetite stimulants that could help get her eating.
If you can possibly get copies of her blood tests to share with me, that might help.
Let me know what other questions you have. Rebecca