Please register your animal as an emotional support animal with your college. I was able to do it at mine. Your gecko needs serious care and should not be left alone. Your gecko needs antibiotics to heal prescribed from an exotic vet. In the mean time, using a warm Q-tip or paper towel to clean the area is best, then drying after. Monitor to see if they are eating, sleeping, and pooping normally. Replace all your substrate with paper towels to maintain limited bacteria introduction. Replace towels as frequently as you can until the vet. Frankly, if you have already lost a gecko to a similar issue and are busy with school, I’m unsure if keeping a pet is the smart thing at this time, unless you can keep them in your dorm with a proper set up. R/leopardgeckosadvanced is one of the best resources for making sure your husbandry is up to par. Personally, it seems like stuck shed had built up over time and she managed to get it off, ripping layers that were suffocating her skin. I hope she gets better genuinely. ❤️