Post of pic of the setup. This may be related to the setup or husbandry.
Mites could stress the snake but you should be able to see them by now.
Any signs of shed? Going through or having a stuck shed can put them in a bad mood.
She just shed about a week ago. She did have a bad shed it came of in 3 pieces instead of 1, but the humidity has been fixed so her next shed will be good.