Poor lamb.

Taking on a rescue is a big task I know, I've had several. Sometimes injections can cause problems at the injection site, but it doesn't happen often if the correct medicine and dosage is given. An experienced vet can show you how to do the shots yourself, which is what mine does, negating the wasted trips to the vet.

It is important to keep her warm, but a heating pad with no thermostat can easily burn your snake. You must be very careful.

Try calling the vets office and telling them your snake is not better and see what they say. My vet will allow me to purchase another round of antibiotics if the first doesn't do the job without charging me for another visit. The antibiotics are usually not expensive. I'm treating my husband's mojave male rescue for an RI right now in fact, and we are on our second round of shots.

If your vet continues to recommend oral, I would contemplate finding another vet. One who will prescribe shots and teach you how to administer them. It is not hard to do, but if your snake is very big it helps to have two people to do it.

I wish you all the best with your girl.

Gale