I'd have used just plain water* over saline- salt in wounds tends to HURT. (*boiling then cooling it to make it sterile)
I sure understand the panic seeing blood that you didn't expect- I can also recall someone that panicked about blood on their snake that turned out to actually be from the prey- so it's best to investigate first- & then panic only if it's relevant & really necessary.
I'm so glad this GTP is chill -that really helps to work with all your snakes to get them as "chill" as possible with handling, because sooner or later, it tends to pay off- like at times like this. I hope she continues to do well with no problems.