Oh goodness I was rubbing it a little to try and move it because it was positive that it was a retained eyecap. I don't think I hurt her though because she wasn't being too wiggly. I will leave it alone.

She last shed about a little over a month ago I would say? I first saw this a couple weeks ago though but I thought it was her eye whites from looking forward but when I took her out to clean out her enclosure I noticed it was definitely a skin-like thing. As for humidity levels when i first got her of course she got dehydrated pretty badly because I had no idea what i was doing. I brought her to the vet and he suggested I just make sure her hides stay nice and moist and I've been doing that for years and she's been shedding all in one piece every time. Because of that when she used the little sticky hydrometer as leverage and pulled it off I never bothered to put it back up so I'm not sure exactly what the humidity is at.

Thank you for your help, I'll be sure to update next time she sheds.