... certainly worth a vet trip to rule out parasites, and if the vet feels she is dehydrated badly, they can do IV fluids to keep her from getting any worse. Drinking, soaking, and humidity can only rehydrate an animal slowly, where an IV can do it very quickly.
Assuming you have a skilled herp vet nearby capable of starting an IV in a snake.
Rudeness is the weak man's imitation of strength. Eric Hoffer(1902 - 1983)
“The greatness of a nation and its moral progress can be judged by the way its animals are treated.” ~ Gandhi