Oh... I'm really sorry to hear that. What have you all tried feeding her? Or won't she eat anything? When one of our hens had sour crop really bad we fed her a mixture of yogurt (with live cultures), scrambled eggs and olive oil.
I wish I could help but I used the stuff in the tube. I wonder if you could crush it up and put it in some eggs or yogurt, or whatever you're feeding her right now. That's what I did with the cream.