You're wonderful for saving the dog

Time and patience are the main things. This dog hasn't been exposed to anything in the oustide world. Just imagine how scary is must be to have everything so new and different all at once. She will definately come around and your love and caring will help her. You will see her develop into a confident, happy dog and it will be the best feeling in the world.

Just remember to take things slow. Sounds like you're doing wonderfully.