Do you have any pictures of the turkey? If she is standing and walking, her spinal cord is intact. She might be suffering from wry neck (torticolis,) which can happen after a head or neck injury. Many people use human vitamin E 400 IU softgels plus a small amount of b complex daily given orally or in food for a couple of weeks to help. Make sure that she can get enough food and water, or you will need to do that for her several times a day. I would not brace the neck, since that could become tight and cut off air or circulation, but just give her supportive treatment. Make sure that she is not picked on, or separate her. Let us know how she gets along. Hopefully her wings and neck will improve.