I have 8 hens total. Long story short- I had a WCB polish hen that was picked on by all the others and had to be separated. While she healed, we built a separate coop fo her. Once she was well, she and the SL polish hen became roomies. For over a month they lived just the two of them, very harmoniously. My SL polish wandered and was hit by a car, and miraculously survived, with just a broken beak. She was healing in the infirmary in my basement, along with a BR hen who my rooster injured. Well, while the SL polish was getting stronger, the BR hen decided on one of her daily outings that she was going to live in the polish coop- she and the WCB polish hen have been living happily together for over a week now. The problem is- my SL polish is now feeling fine and ready to re-join civilization. But, the WCB polish will not have it- she attacks her! And badly! I've tried placing the SL in a dog crate next to the coop all during the day for 4 days straight, and tried to turn them together today- same aggressive result! I don't know what to do. I'm fairly certain that the 6 large hens will beat her up too. But, I cannot have a 3rd coop! Any advice would be greatly appreciated! Thank you in advance.