Does Anyone know This Dog??

A few nights ago, something got into the cat food in the barn.  I thought it was one of the cats from down the road and did not think much about it.  Then, one of my chickens got killed.  I figured it was a fox or weasel.  Last night, driving home from work, I saw this dog in the road.

I could see that she had porcupine quills in her face and that she was in poor condition.  She ran straight down my driveway and out past my barn.  I tried to find her, but she took off into the woods and disappeared.  It was 2:00 am and tracking strays in the deep woods was not going to happen.  I went to bed hoping she would find her way home and feeling rather guiltily relieved.

This afternoon, I spotted her by my pond and knew I wasn't getting off the hook that easily.  I went out armed with food, a leash and Connor to point the way.  We tracked her through the woods for a while and finally managed to get close enough to toss some food her way.  That sure got her attention and i was finally able to ease up and get a leash around her neck.

She was standoffish, but friendly enough once caught.  She has clearly been having a rough time on her own in the woods.

She is emaciated, exhausted and the quills in her face and chest have clearly been there for some time.

After talking to her and some more food, she let me pull most of the quills out and I also took off about a hundred ticks.

I got her home, got her some more food and put her in a crate in a quiet spot where she can rest.

I've called all the local vets, the shelter, the dog control officer...no one knows her.  I think she has been dumped in the woods.

I really do not want another dog.  Please tell me that someone recognizes this creature and has been looking all over for her for weeks.  She is safe for now and I will make sure she stays that way.  I think she has been dumped in the woods, but I am hoping I am wrong.

Please tell me I am wrong.