Oops, you've already dont that. Sorry. I would give her another day in seclusion and then let her out to try to walk. I have had several limpy chickens but none that flopped their wing while they limped. That worries me for your bird. No signs of internal damage from the bash into the pole...
I would put her in seclusion for 24-48 hours. Large enough for her to move around IF she wants to but keep food and water close by so she doesnt have to move if she wants to rest. The other chickens will sense that she is weak and pick on her if you leave her with the flock.