It's commonplace in the Appalachians for sorry people to release their unwanted pets on the side of the road. Sad but true. The county had to get rid of a convenience center aka "town dump" several years ago so many wild dogs were running amuck.
Why would anyone take a dog like that and dump her in a remote area. I think there are to many sorry folks in this world.
Glad you took her in. She looks to be a good dog.