If you add water to what she eats, that is a good way to get fluids into her. I kept a hen alive once when she lost her balance for about 5 weeks, just putting water into her chicken feed, eat, and making everything watery. She refused to drink, but ate very well. Suddenly one day she could balance again, and just walked out of the coop. 
Her head looks pretty good. Does she have any green bruising or swelling on her legs? Have we mentioned chicken sling chairs yet? Those are good for lame chickens to get them up. Yes, back in post 39, Coach 723 mentioned those with examples. Does she move her wings normally?