Coccidia or worms seems the likely cause. i know with coccidia they will often stay to them selves, huddled in a corner, in a puffed up posture, and looking kind of pale. Corid or Sulmet is for coccidia. If you see no worms in her poo, then I'd treat for coccidia. If you see worms then treat with wazine for now. You need to keep her eating and drinking. Scramble up some eggs and by holding her beak open from the side, or from coming overhead with your hand and pressing on each side of the sinuses, open her mouth and put in a small piece of egg. The liquid she spit up is common when they drink a lot and then you pick them up, that happens alot. Put vitamins in her water until you can treat her with Corid etc. Put a small cup of water or put some water in a syringe and dribble it along the side of her beak. Drinking is very important. And keep her warm. Best wishes