Help! Bad Shed!

[cmyinstl]

My 6mo gopher snake is going through a bad shed. This is her second shed with me, and #1 went really well and came off in one nice piece without increasing humidity or anything special. This time, however, she lost her head and eye caps in one piece, but the rest has been coming off in 1/2 inch bits here and there. She's been shedding for 16 days now, and still has about 1/2 her body to go!

Any tips to get her shed are appreciated.

Here's my current situation:
-20 gal tank with coconut substrate and various wood hides.
-swimming pool/large water dish
-shed box with moist paper (I've never seen any evidence that she's uses this)
-soaked towel over 1/2 of screen lid
-Daily misting of walls
Current humidity is a tad over 60% (I can't seem to get it any higher)
Temp is 70/90
Humidity at the start of shed was around 55%

I've tried soaking her in shallow warm water, but she just panics. She does better if I hold her under a warm running tap and let her rub on my hands, but this still hasn't gotten results.