Thank you for the update.
My hen also spent a few more weeks enjoying her life with the flock until she had problems walking and it became obvious she was in pain.
I had this happen many years ago to one of my hens and when I did her necropsy it turned out that there was a hole in her oviduct and the eggs I was feeling were located in her body cavity, hence the membrane when feeling for stuck eggs and her still being able to poop.