I think I'd like to find out what she died from, I'll probably look up how to do a necropsy sometime today. I don't know if she was ever egg bound, when I felt inside her there was no blockage as far as I could tell.
Hen Acting Strange; Standing but Won't Move, Wings Drooping - Page 2
Had she ever laid eggs or was she currently laying? She could have been an internal layer. Sometimes with a necropsy you can see egg-like material in the abdomen. You may want to take pictures of her liver, abdominal contents, inside the crop and gizzard for blockage, and look inside the intestines for worms. A refrigerated body can be sent to the state vet for a full necropsy. There is usually a charge but is free in a few states. Here is a link for that: http://www.usaha.org/Portals/6/StateAnimalHealthOfficials.pdf
I am so sorry. It is confounding and the learning curve is steep raising and caring for chickens. I found with my girl she internal egg laying. Most were visible on X-ray. The eggs start to stack up inside of her. Keep us posted on what you find, even if it is an X-ray diagnosis on your poor girl at this time. I understand and bless you.