Oh gosh I'm so very sorry!
That was very sudden!
I know it is an unpleasant thought but if she has died and you want to improve your knowledge, you could cut her open and check her organs etc and see if there was an egg stuck or some abnormality. I find it really interesting once you get over the emotional upheaval and it helps me to be able to learn something from their death. It can also sometimes benefit the rest of the flock, because you may find something like excess fat or worms that suggest that you may need to adjust their diet or your management system to help prevent other similar deaths. There are threads here on BYC where we share photos of such examinations and discuss possible diagnosis with other members and it can be an invaluable learning tool, but I appreciate that not everyone can get their head round it. I hope I don't sound too insensitive suggesting this when she has only just died and you must be distraught but it's no good waiting until you have buried her to mention it.

I know it is an unpleasant thought but if she has died and you want to improve your knowledge, you could cut her open and check her organs etc and see if there was an egg stuck or some abnormality. I find it really interesting once you get over the emotional upheaval and it helps me to be able to learn something from their death. It can also sometimes benefit the rest of the flock, because you may find something like excess fat or worms that suggest that you may need to adjust their diet or your management system to help prevent other similar deaths. There are threads here on BYC where we share photos of such examinations and discuss possible diagnosis with other members and it can be an invaluable learning tool, but I appreciate that not everyone can get their head round it. I hope I don't sound too insensitive suggesting this when she has only just died and you must be distraught but it's no good waiting until you have buried her to mention it.