If you can, upload some pictures of her enclosure. It's easier to see if there's anything wrong with that and someone might notice something that is escaping you.

If you feel like the vet might not be giving this issue the proper attention, consider getting a second opinion.

What's your husbandry like? (temps, humidity, substrate, and so on) How do you clean the enclosure and how often? When you handle her / take her out of the enclosure, where do you take her? (ex.: just a couple mins on your lap/hands, free roaming the room, etc.)


And please keep this in mind, whenever asking health related issues, you might (and probably will) get answers from the experienced keepers/breeders but also from new or fairly new keepers, they're all trying to help but sometimes it just takes one misinformation, to wrongly advise someone and for you to start treating a non-issue (or to wrongly treat it) while you may be aggravating the real problem the snake has.
Above all remember, we can help detect the common issues this snakes have but no one here is a vet (even if someone here is a vet, here they are just another member of the forum), so when in doubt please visit a proper reptiles vet.