hay ... she will be fine...just let her do her thing in her own time...every one of them shed in their own amount of time. Technically there are 4 phases of the shedding process.
1. Pre-shed...may look dull, may have attitude change, may refuse food or you may not notice anything BUT the snake knows it is about to shed.
2. Blue....this is the part where the eyes cloud over and the skin really tends to look dull, the snake is not able to see very well due to the secretion between teh old eye cap and the new one (hence the blue or cloudy look)
3. Clear....after having been blue, then then clear up, the eyes look normal again, as does the skin, this is the stage right before they actually shed the skin.
4. Shed....the act of actually sliding out of the old skin to reveal the "new and improved" skin
As I already said for each snake the whole process takes different amounts of time. Usually little ones do it faster and larger ones are slower, but not always. I have one little due who does the entire process in approx 4-5 days. I also have another little one who takes 9-10 days, there is a yearling who takes 13-15 days and an adult who takes 10-12 days.
Humidity is fine as low as 40% and really the only time you need to worry about increasing humidity is if they have a shed that does not come off completely then next shed, offer a shed box(a sealed plastic box, with and entrance hole cut in it, lined with moist not wet, paper towel..this allows your snake to come and go from it as they feel they need it, it also allows you to remoisten the paper towel with out wetting the viv to much and causing mold growth).
Hope this helps.