Turns out, not poisoning. Looks like the bird hit it's head real bad. It makes sense, since the night before I saw all their stuff knocked around (not sure what happened).
Turns out she wasn't gasping for air, her breathing was fine, the opening and closing was nerves. That's gone now, yay.
On day 3 now and she still can't walk or hold herself up, but she's trying, so I made a sling to hold some weight off. But, she's eating and drinking without force. One big change was she couldn't bend her legs, today she can fully and easily.
Looks like brain swelling was preventing motor functions, cognitively the bird was good and alert but tired and weak. I'm hoping every day she gets better, she desperately trying to walk when she has energy.