If those are the temps then I wouldn't worry about it at all. She's just chillin Moss hides are great for sheds. Eco Earth is an excellent substrate for humidity but you'll want to mix in a little cypress mulch on top to keep from too much humidity/mold.

I used a terrarium for several months before going to PVC. Living in Vermont it was quite the challenge keeping heat & humidity on point. However, the closest I ever came to perfect was with Eco & Cypruss with a 3/4 foiled off lid.