Update:
I took the snake to the vet today and want your feedback. The vet was very nice and seemed to know what he was talking about. He gave the snake 3 injections: Vitamin A, Vitamin D, and amikacin. He sent me home with 2 more syringes of amikacin. He said to give another injection only if symptoms continue. Every 1-3 days depending on whether she is active or not. If she is inactive and symptoms persist give an injection in 3 days. If symptoms dissipate right away, no more injections. The RI is low grade. No culture was done at this time. I suggested giving all three injections regardless of symptoms and he said that was not in the snakes best interest because of the toll the meds take on the liver. I still have her in quarantine. How long should I leave her there after she looks better?