OH MY GOD!!!!!!!!!
What horrible news! So sorry to hear thatI've seen a couple snakes do this and it was just a sign of impending eggs...
I read on another forum (don't ask me where, or who said it, or in what context) that eggs are only viable if they actually pass through the cloaca. But like I said I have no idea of the source or weather or not that is true. By all means, I would try. It may give you some insight as to what happened with her.
Again, so sorry. You must be devastated, and nothing any of us say will make it any better :'(