They can have a stuck egg for many weeks before they die. I did a necropsy on one and the stuck egg went bad, of course, and if grew into a huge 1 pound mass of pus.Do you really think a stuck egg would have caused her to become so lethargic/not interested in feed? She's been deteriorating for at least a week; I would think that a stuck egg would have killed her by now.
-Kathy