The anti fungal treatments DO work and thank you for the great advice. But you will have to vomit your chicken (or take her to a vet if you can't)- very carefully.
Unknown to me, my chicken had gotten a hold of a snake houseplant and ate half of it, when she had a "chicken sitter" watching her...anyway, didn't take long for her to weaken and the other chickens began picking on her. If I hadn't been vomited, she would have died-there were huge fibrous strands that would have never come out any other way, I had to pull them out with my hands quickly, so she could catch her breath. Boy did she seem happy that was gone. Very weak, but up for eating yogurt. I recognized the plant when I pulled it out of her mouth, and then noticed half of the plant was gone.
I had taken her to the vet for general weakness before I knew about the plant eating, who put her on antibiotics and an anti-inflammatory. She seemed to be getting better, then came sour crop- and the whole "treatment"...Lotrimin, 3 1/2 tsp per day, mixed in plain yogurt or watered down mash and now she is running around playing, eating and pooping normal. I'll probably keep her on it until the crop goes down completely, its only a bit swollen and getting better each day.