I'm sorry your pup has suffered with some serious health issues. Your right to be concerned about any unnecessary exposure to any stressers on her immune system. The science has been out for almost two decades that annual vaccines is no longer recommended. If any vet is doing annual vaccines he/she is not doing what is in the best interest of the pups.
There are several researchers who have studies proving the duration of immunity is a minimum of 7 years and quite possibly for life, when the pup has had the required core puppy shots (distemper & parvo) and the one year booster.
It might help to read some articles pertaining to this important subject. Here is just one by Dr Schultz....
Lifelong Immunity - Why Vets Are Pushing Back - Dogs Naturally Magazine
This blog has some great info too....
How to Avoid Vaccination Reactions in Dogs | Truth4Dogs