The first shed should have occurred shortly after birth. It's not like all the other sheds these snake will have in their lives. The first shed is a ultra fine shed, almost like ash. All the snakes I've birth get this shed done within the first couple hours of life. Putting them in a container with wet(not moist) will help them remove it. What are your plans for the neonates? If releasing back into the same area the mother came from is your idea, it's a good one. She was suppose to help repopulate the area. The sooner you release them the better for the species. If you plan on keeping them eating could take a week to a month and some snakes may be lost along the way.
Best of luck and congrats.