I had totally given up on mine. Then yesterday afternoon she was sitting up, she couldn't walk but she started being able to pull her feet under her and sit up on her hocks. Last night and this morning she was a mess, she couldn't even raise her head off the floor.
I got busy doing something else today and walked back into the room and she was walking backwards on her hocks! I was so excited! I put some grain down and she walked on her hocks slowly forward to eat. This evening I saw her stand completely up couple of times. She even tried to fly up on the lowest rung of one of my kitchen chairs to roost.
I am not holding my breath but this is a big improvement. She has refused water since this started but has not stopped eating. I have slowly squirted pedialite with added vitamins into her mouth several times per day. She drank water from a bowl today on her own for the first time. I am thinking that that is the reason my first pullet died was from dehydration. I kept water in her crate but didn't realize she wouldn't or couldn't drink.
One thing that I know is helping, is taking her out of her crate during the day and just sitting her in the floor on a towel or blanket. She just seems to try to regain the use of her legs more, in the crate she is depressed and doesn't try to move.
This picture is of her on Wednesday morning, all she could do was spin around on her belly in a circle, with the help of her wings:
This picture was taken Wednesday afternoon when she first got her feet under her and stood on her hocks: