Put a muffin cup tutu on her! It will help her from reaching around and picking. I promise you, she will HATE it, but she is just going to have to deal. This will likely take a week or more to heal, but I would keep her totally separate from the others for the entire time she is healing. Trust me, I've been there. To keep her familiar with the other chicks you can put her in with them with a barrier (like scrap chicken wire), but do this with supervision only. I had to keep a chick separate for three weeks due to a severe injury and the one time I tried to introduce her back early on in the injury was an enormous mistake. It was difficult to reintigrate her with the flock, she was bottom of the pecking order, but she fully healed and didn't become injured again. Today she has bffs and is no longer at the bottom.