can you move the egg at all? if you try and move that egg down (being gentle) and it springs back. then most likely you have a twist in the membrane and she's egg bound. be careful you don't push to hard and cause a tear. if the egg starts coming out with your help, the membrane is clear and very thin, very hard to see. and it could be around the egg. if it is, I would take to vet and have him aspirate the eggs. if any fluid from the eggs get into the snake, it very well could cause an infection in the female. if the vet wants to cut the snake, she will most likely never breed again if she even lives.
if she's egg bound, those eggs won't survive even if you get them out. they will mold. your decision should be what's best for her. good luck I hope by time you read this, she has already laid them. don