I adopted a 2 1/2 yr old mix 10 days ago. I live in a townhouse and she will not pee or poop outside on leash and she has not had any accidents in the house or in her kennel. I've tried a longer leash so she can have privacy. She loves to walk and is interested in smelling everything along the way, but will not go to the bathroom. My neighbor took her for a walk one night last week & she peed and pooped for him. Last weekend we were at my son's cabin, and she was off leash most of the time & we occasionally saw her take care of business & enthusiastically praised her. It is now Wednesday PM and she hasn't peed since Monday AM. She's otherwise adjusted beautifully; happy, calm, comes when called, friendly with people & dogs. PLEASE HELP!