ok, most of her hasn't shed yet. there are a few things to try to get the shed off.
Grab a pillow case, and throw a towel that has been wet down with warm water in the pillow case and then put your snake in there. Keep her in the pillow case for 20-30 minutes and then see if any progress has been made.
There are other methods as well, but that one is my favorite.
I have a few questions for you:
1. was the UTH regulated by a thermostat?
2. how are you measuring your temps/humidity?
3. when you say the UTH couldn't get the hot side over 76 are you talking about the air temperature in the cage or the temperature of the bottom of the tank? (UTH's do not effect air temperature)
4. what type of substrate are you using?
Giving your snake a bath is actually bad for the shedding process and is unnecessary the rest of the time. By forcing them to soak they get stressed out and the water can remove essential oils from their skin that are necessary for the shedding process.