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.
she still can’t stand or walk but she still chirping away still eating and drinking thank to everyone who helped me 
horray! That's very exciting!