She may be uncomfortable being on her legs all the time.
You could try fashioning a sling to put her in for short periods of time to help support her and let her move her legs. Some birds panic in a sling, while others do very well. You would want to watch her to see if she's going to flip out of it. Her neck...maybe place your rolled up socks or towel on there somehow to help support that too?
Just a thought.
The first video - it's short and give an idea of a sling, I don't know if I would put food/water if she has no control over her head. The second one is about Brownie, it's been a couple of years now, but Kailey asked about him here on BYC. I can't remember what happened to him, but I if I remember correctly, Brownie did eventually recover and was able to walk on his own - it took some time though. Hope that helps.