I totally agree. We got our Border Collie at 3 months old and had no clue what we were getting into. We did everything we could to give her exercise and stimulation but a small house with 2 working adults wasn't enough. We made the decision to let her live with my sisters family in the country. She now has lots of land to run, goats and 4 small children to herd , and she couldn't be a better family pet. Although I miss her sweet personality dearly, she is much better off. Keep trying. I've heard some farmers will let you bring your dog to work them a few hours a week. You might check into something like that or agility training. Anything to keep her mind and body active. Good Luck!