Humidity wont effect that unless the snake was extremely dehydrated. Hard to say what caused it. Over feeding can contribute but i didnt hear about your schedule, the age, size of snake etc... . If everything is on point & she hasn't been sick then maybe a parasite... I wouldn't worry. Id wait 2 weeks and start feeding again.
Thanks, I really hope it's nothing serious. I did notice that the mouse that I fed her last time was slightly bigger than normal even though it was technically still medium so maybe that's it.