I take my injured chickens back to the coop at night so they get to sleep with the flock. You could either let her stay in a crate permanently in the coop, or pick her up early morning and carry her back on her roost when they are all roosted. That's what I do with my rooster Théo who's limping so he doesn't move around but still sleeps with his ladies.Yea Thats what I was afraid of.