All the classic, bad symptoms -- worms??

[biophiliac]

@jcchomps - Condolences for your hen. You nursed her along for quite a while and the loss must have hurt. She was very pretty. Like @orrpeople and @Wyorp Rock , I really appreciate the update.

 

[Eggcessive]

So sorry for your loss. Thank you for the necropsy results.

 

[Barred Feather]

I followed along. Thanks for posting the findings although it doesn't indicate the underlying cause. It's tough to do all you can...research, treatment, care, and more care to then lose the girl despite your best efforts. You did everything for her that you could. So sorry!

 

[Coop de Grass]

I am so sorry that you lost your hen. And grateful for the details that you posted. I am having puzzling symptoms in my flock, so I appreciate everything that you have posted.
You really did everything that you could, it is just heartbreaking to lose the battle.

 

[rebrascora]

So sorry for your loss and many thanks for sharing the findings. I wonder if you ever got any more results or update on your necropsy.

Just seeing this thread now and that necropsy result sounds like the underlying issue was Fatty Liver Haemorrhagic Syndrome......
"This hen has a good amount of internal fat stores"
"The liver is severely enlarged with rounded borders, is pale tan with a friable texture"

An enlarged, tan coloured, friable liver in a bird that had been sick for a while but still had internal fat stores and died from fluid in the heart and lungs would suggest that to me. Fatty liver Haemorraghic Syndrome has a breed element..... larger birds are more prone to it but is also associated with a dietary imbalance...... usually too much carbohydrates in the diet from corn, scratch, bread etc or even an organic whole grain diet, where the bird can selectively eat specific components of the feed because it is not homogenised.