Hey, C....
I have some thoughts on what might be happening, but would look like a book, so if you want, you can call me. My home # is ###-###-####. I live in Carrollton, and Man's Best Friend has a location here at Midway and Trinity Mills. I had a jack russell terrier that was deaf, and they were able to train him. (I used the Grand Prairie location, since I lived in FW at the time.) Generally, they will board the dog for 2 weeks, and train her, enforcing good habits and breaking "bad" ones. Then you will come and work with her and the trainer for a while. The trainer will be able to tell you what your family might be doing that is confusing her, and then you can work on making those corrections. (And, yes, I know with 4 year old twins, that can't be helping much!) It can be expensive, but well worth it, for the sake of your whole family and your dog! I wish you the best of luck!!