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Hi, I can help you with your question today.
What happened during her reaction?
Did she have any other vaccines given that same day?
OK, since rabies is a human public health concern, it is the only vaccine regulated by law for dogs and cats. Unless she has a life threatening reaction to the vaccine, it is unlikely that the state authorities would approve an exception in her case.
Instead, I would recommend hospitalizing her for the day. I would pre-medicate her with an antihistamine and a steroid prior to the vaccine, and then monitor her for a reaction for the rest of the day.
Hopefully she is eligible for a 3 year vaccine in your state, and then we would only need to repeat this every third year.
An allergic reaction alone is not enough. Hives and head shaking are a mild reaction, and I doubt that your vet nor the public health authorities would consider the vaccine that risky in her case.
I can't speak for them, but I doubt that you can get an exemption waiver. This is because rabies is almost 100% lethal in humans, so risk to people takes precedence over pets.
At this point, there is no reason to fear escalation to a fatal anaphylactic reaction. We see vaccine reactions on a regular basis, and with pretreatment before further vaccination we rarely see repeat reactions.
Please let me know if you have further questions. I am happy to continue until I provide the service that you seek.