That is good that she is up and alert. Just keep babying her with some wet feed, chopped egg, or a little rinsed tuna or salmon. I hold a measuring scoop up to the beak and sometimes dip their beaks once or twice to get them drinking. I use my clawfoot bath tub for a pen or a dog crate. Dog crates (with food and water,) are good for placing them back into the flock, so they slowly get use to her again. A roost can even be placed just off the floor in the wire ones. That surely is some black eye she has. Some chickens can be real bullies. I have given away a few beautiful ones with bad habits.