My nephew was holding one of my hens and she got a wing out and left his arms and landed on the ground on her side. My dog was behind us and lunged in and must have punched her nose down on the hen. No feathers or wounds can be found but she is holding her leg up and will not walk. I separated her and have had her resting in a secure quiet area. She eats, drinks and acts normal. At day four now and this is first day she hasn't laid an egg. She does put the foot down weakly but seems to not bee improving. Any advise is appreciated