What substrate are you keeping her on? Is that the dark brown stuff in the photo? I feel so much better, if that's what it is. Like Reptibark or something?
I feel like I'm seeing definite urates in the mucous in the upper part of the photo. The beige part in the lower section of the photo is what "food" looks like when it moves through the bowel quickly and doesn't get tinged by bile.
The big glob looks like a pink, and it is fairly unusual for one to get pooped out whole- so it could be that she regurged that on top of the poop. Which wouldn't be all that unusual after all her traveling, and anesthesia, and surgery.
$700 is steep- but not out of line, above ER prices if you go to an emergency vet, where everything is double, at least. I would expect a "routine" uncomplicated surgery at a reptile vet during normal business hours to run in the $250-$350 range. A friend of mine has had three, I think, snakes "spayed" for egg binding, (in the process of laying) and those surgeries are in the $900-$1200 range. Each. Well, actually I think one of them just had a surgical repair, and is technically able to breed again with a high degree of certainty that she could lay without complications. But anyway...
Well, she looks not awful in the photo. Not worse, at least.
I'm sorry you're going through so much stress just for being a good person and picking her up.