Regarding the damp paper towels on the top of the screen, I would use either aluminum foil or saran wrap instead simply because they don't dry out and they retain mosture better. The paper towels can dry out and are more porous, allowing moisture to escape. Damp paper towels *in* the enclosure are fine; although damp sphagnum moss is my personal favorite.
If she has patches of old shed as of tomorrow, you can try a warm water soak with a towel.
Also, not sure if it's the design of the water bowl, but you need to change her water. It should be refreshed whenever it's dirtied or cluttered. Looks like a bunch of bark might be in it.
Our beloved snakeys usually prove to be more expensive than most new owners originally bargain for, but it's so worth it for their well-being. Spending the necessary money upfront is worth it, and will ultimately save you in vet bills later if your husbandry is right!