She has a chance, don't give up! Do you have any of that sav-a-chick stuff lying around? Some of that in the water might help perk her up. You could also do straight Vitamin E if you have it, or poly vi sol without iron.
Yep, that's wry neck. I had a duckling with it. What you need to do, if you can, is go to Tractor Supply or a similar feed store and look for a product called Poultry Nutri-Drench:
http://www.tractorsupply.com/en/store/nutri-drench-poultry-nutri-drench-4-oz?cm_vc=-10005
Mix it in her water...