Problem Shed

My baby common boa had a problem shed about 2-3 weeks ago. When I looked into her enclosure I was a large shed and I assumed that it was a complete shed. The next day I took her out and noticed that her skin was still wrinkly in some spots; the more I looked the more spots I found. I have been working for the last 2-3 weeks to get the rest of the shed off. The shed areas remind me of peeling sunburn. I fist did the pillowcase and the washcloth procedure twice. Once before feeding and once a few days after feeding. That didn’t seem to work at all. Last Saturday, I soaked her in warm water for about 30 minutes and then had her crawl through a dry towel that I was holding in my hands. I was holding the towel tightly so she would have to work a bit to get through. Then I switched to a wet towel and did the same thing. I did this for about half an hour. Then last night I did the warm wet cloth with her crawling through again. I still haven’t gotten all the shed off. I’ll soak her again today and give her more snake massages. My question is what would cause a bad shed. The humidity was/is 50-60% and she had a water bowl to craw into (which I didn’t see her use this shed). What else can I do to make sure she doesn’t have a bad shed again? Any other suggestions for getting the rest of this shed off?

Sometimes humidity plays a part in bad shed, but also heath as well. You can try misting the tank several times a week.