I have a .1 Spotnose ball python

I purchased this one along with another female and both were sick. No way of returning them to seller...etc

The other died a few months back. This spot is still fighting. Roughly a month and a half ago I treated her with baytril for two weex. Then the vet. Gave me fortaz 7 injections.
Temps on the tstat are cranked up. Still no improvement and I don't know what to do.
What do you think, is there another antibiotic you recommend. And please I undersand the "You have to get a culture"
What I'm asking is does the snake have a chance of recovering after trying baytril & fortaz?