Thank you for rescuing this unfortunate creature!

I hope you are keeping her near you most of the time. I would talk to her constantly--doesn't matter what you say--she won't care. Get her used to the sound of your voice. Get her used to the sight of you, always near.

99% of all dogs LOVE food! If she's afraid to take it from you, then put it in a bowl near her and stand back. Gradually, get the bowl closer and closer to you, and finally right to your hand.

She is going to hate the vet, so just accept that and move on.

Love her, be patient with her, treat her only with kindness. Never, ever use force on her for training. Your hands give only pleasure. Once she bonds with you and trusts you, a quiet cross word should be enough to correct her. For now, I wouldn't even correct her behavior at all. Just get her to trust you.

Even though she is 18 months old, she is socially and behaviorly a puppy. She has seen nothing in her life but a small pen. She is going to be afraid of everything and skittish, just like a new puppy.

Good luck!!