Hey Wyorp Rock, thanks for all the advice. We were so busy with her and work and then both of us getting sick I haven't had a chance to get back on here, but the update is GREAT!
LittleMama had us and all the ladies where I work worried for quite a while. We put her in the "hospital", a large plastic tub we use for new chicks and putting a chicken aside if they need some seclusion. I pulled out one of my gallon waterers we use when we get a new batch of chicks and mixed up a gallon of chick vitamin water, put a low light on one end for extra heat because it was still cool at night then. I bought a bottle of vetericyn spray for injuries, but at that time I didn't know if she was injured badly. Brought her into the house in our laundryroom for the next 4 days.
The second evening I ran her a lukewarm bath and decided to just use a little dab of Dawn in it. She was still caked with either mud or blood or a combo and I couldn't tell how she was under her wings especially. I just turned down the bathroom light and immersed her, water went about halfway up and just held her there slowly pouring water over her. Wrapped her up in a soft towel and just held her for a while that night.
Her breast and back feathers under her wings started falling out 2 days later and although my husband thought he saw her drinking I never did so I was very worried. About 5 days after the attack, she drank water and took a liitle warm watered plain oatmeal from me. Its been gradual since then, but she's got a great appetite now and started laying eggs one week ago (3 so far). Two weekends ago I put her out in a closed in area in the yard for the day with shade, water and feed and let her move and stretch and get some fresh air. She's looking fluffy again, not quite all the way, but good. Her little comb is healing and she's very alert.
We're very excited.

Might seem like we went overboard with her for one chicken, but she's our baby. I'll post a pic if I get a chance.