Hi everyone! Okay so I have a bit of a problem. One of our friends had a single chicken and one of heir neighbors saw the hen. So the neighbor decided to call the city and complain. Anyway, the city made her get rid of the chicken and we now have her. She loves people way more than any of my other chickens, and never tries to hurt them. Over the past couple of days I have been trying to integrate them outside of the coop, but all three of my hens continue to gang up on her and attack her. She doesn't fight back, just lays on the ground and tries to protect her comb and neck, since that is what they attack. You would think that after a couple days of this that they would just stop, since they've clearly shown who's boss, but they don't. I also know it's not the best idea to introduce a single hen at a time. Our local feed store is getting chicks this Friday. Would it maybe be a good idea to try and give the adopted hen some chicks? Being alone, do you think she could possibly adopt them as her own? I figure if I got two chicks then when they grow up and are with the adopted hen, I could introduce them all then. Then having three established hens and here new ones would balance out a little more. Any feedback on this? It's the only thing I can think of to do. Plus, who doesn't want more chicks. 
Thanks again!

Thanks again!