Treats, Treats, Treats!! I too have a rescue girl that was older lived in a cage and she had no idea on how to act like a dog. 1st let me say thank you for taking her in
But remember it may take time, some people on yt said they had no problems, but I know my Ivy is still not over being a puppy mill dog. She is a lot better but it's been about 2 years working with her. Now for potty training, I took Ivy outside with a leash on every 3 hours or so saying the same words to her ( I say go pee pee ) and don't forget to tell everyone to say the same words. When she goes make a BIG deal out of it and give her a treat. After some time she will get the idea. I would love for you to keep me updated!!