I have no experience with Sunbeams...I was tempted many years ago when a local pet store had one, but with a little reading I found out they were usually
wild caught & heavily parasitized. To my knowledge they do need a humid habitat also, I think you'd be better off seeing a vet so you know what you're
actually dealing with & can get the right topical medication. Since you recently got her* you should also take a fresh stool sample too (check for parasites).
*When you bought this snake, didn't you ask any questions of the seller, as to proper care & whether or not she is captive-bred or w/c, etc? That was your
"golden opportunity". These are very appealing snakes...I HOPE she is captive-bred (& NOT parasitized) but you seem to have so little information??? Using
the wrong medication can be just as harmful as using none at all...maybe more so because you delay the correct treatment wasting time on the wrong one.
All the best, let us know how it turns out? I'd love to know more about them.
Also hoping someone else here has direct experience with Sunbeams, but not making any bets...
This article seems current & informative: https://www.outbackreptiles.com/2018...unbeam-snakes/