If she is more than 3 or 4 days old, it is likely her problem can't be fixed. It looks like her condition might be too far progressed.
If it can still be fixed, Physical Therapy would probably help her. There is some info on that on the Poultry Podiatry page on the site linked in my sig below. You could try to help her practice rolling & pushing up with her wing to help her learn to get back up, in addition to practice standing. It would probably take a day or two of practice for her to understand & develop her muscles enough.
Very sorry for this trouble you're facing. It's good she has you to try to help as much as you can, and to give her tender caring.
Edited by SpeckledHills - 8/6/15 at 4:25pm