I can certainly understand your concern and how scary this must be. It's good that you are keeping such a close eye on her. I think taking her to the vet was a very wise decision. Is your vet very familiar with sugar gliders? Did they do any blood or fecal tests? When I brought my first glider home, she showed very similar behavior as yours. It turned out to be a calcium deficiency which was quickly corrected with supplements. Hopefully the "cure" for your little one will be as easy and she will show quick improvement. However, I would definitely follow up with a qualified exotic vet, especially if she's not eating or drinking. Don't be afraid to ask questions of your vet or get a second opinion if necessary. The well being of your sweet baby is of utmost importance and she deserves the best care! Take care and please keep us posted.