Sour/impacted crop help

[Hens rule]

One of my hens, a overall healthy 9 year old hen was acting strange a few days ago but the next day she seemed fine, I’m guessing at that point she just had a slowish crop. 2 days ago I noticed the hen acting much more lethargic so I checked her crop and it felt like a full water balloon and her breath smelled bad so I’m assuming it’s sour crop. She also threw up if that’s what it’s called or had some of the liquid come out a couple times.
So since then I’ve been massaging it and I gave her tomato juice at first thinking it would help it empty, the next day it was still full so I gave her apple cider vinegar which I don’t think she liked the taste of so I wasn’t able to get her to drink a lot.
massaging her crop doesn’t seem to be helping and I don’t understand why it’s not emptying, However when I massage it or afterwards it does feel less full, less like a very full water balloon, so maybe some of it left her crop while massaging? But it always seems to go back to its full water balloon feel a few minutes later. Any ideas for what I could do?
update: I gave her olive oil.

 

[Eggcessive]

At her age she is very lucky to have lived a healthy life. It sounds like her crop is very sour, possibly from an ongoing inpacted or slow crop. This condition is common if there is an underlying pressure in the abdomen from a reproductive infection, egg yolk peritonitis, cancer, or ascites. I doubt that any treatment will help cure her condition. I have lost several hens who had these crop disorders for weeks. They tend to slowly die of starvation, since food is not digested. Check the crop in early morning to see if it is emptying. Giving small pieces of chilled coconut oil offered to peck is sometimes helpful. Many use an antifungal medicine, such as Monistat cream given orally 1/2 inch twice daily, or Meidatatin/Nystatin in the food. Crop disorders can be bacterial or fungal in origin. Here is an article that many use with crop problems:
https://www.backyardchickens.com/ar...w-to-know-which-one-youre-dealing-with.73607/