The post you answered to dates from 2015.I'm so sorry to hear that I'm going through the same thing. I have done exactly what you have done as well and I'm devastated. I'm nursing her as well. Wondering if I should put her down now.
Did you make your hen vomit? If you did, she might have aspirated fluids as making them vomit is dangerous and will often lead to their death because of aspiration.
Here is some info about crop disorders and how to treat them:
https://the-chicken-chick.com/chicken-anatomy-crop-impacted-crop-sour/