I wouldn't apply a wet paper towel. Use Bacitracin or Triple antibiotic ointment to keep the membrane from drying out. Coconut oil can be used too if you don't have the ointments.
Hopefully the chick will be able to hatch on its own without assistance, if you find that after waiting for a good period of time and she needs help, wait a little longer and thoroughly read thread this article.
She’s out of the egg but just laying there peeping and breathing. She seems to still be attached to the egg. There seems to be a sac of some sort on her belly? What should I do now?
If there’s a sack on her, I could be her yolk sac. Keep her in a small upright paper cup with a tissue in it. it should absorb on its own. Don’t cut it or remove it, its vital that the chick absorbs it on its own.