Sadly, reproductive problems are not really treatable :hugs You can offer her comfort and supportive care like you have been doing.
I'm very sorry, I too have had hens with similar conditions and it's frustrating and heartbreaking.
I do agree, getting a necropsy to find out more is always...
Yes, you are responding publicly, so everyone can see it.
I'm sorry about your hen.
If you have a Tractor Supply, they should carry poultry vitamins like Poultry Cell or Poultry Nutri-Drench that you can give her - direct dose is 1 cc per 3 pounds of weight.
Her stance, to me, makes me think...
I'm sorry she is not doing well :hugs
Reproductive problems are not always being egg bound. As mentioned earlier it could be tumors, cancer, abscess, internal laying, etc. Marek's is a possibility, but without testing, there is no way to know for sure.
I too agree, getting a necropsy to see...