I am thinking New Castle Diease as the poop that I can see from your picture + the symptoms. All you need to do is flush her system with water via syringe for 1 to 2 days. Give her about 25-50ml per hour, this needs to be spaced so one dose per 15 minutes or something like that. Good luck!
She lived but she did have most of the symptoms. Plus that was when I wasn't active on BYC so I was never told that I could test her poop too.Did you have you hen tested? If not, you cannot say what it had.