I'm sorry you are going thru that. Can she drink on her own? You said that she can move her head so she wont drown that's good. Keep her hydrated. I dont have chickens i have ducks. I've found a lot of the same things work for both. What about niacin? Do a search for it on this website and decide if its something you want to try. Id just keep doing what your doing. Accidents happen I did the same thing when I put my ducks to bed tonight I dont know who I squished. I'm sure mine are fine they're adults. I wanted to let you know you're not alone.