Yeah this is my mom. People who so firmly believe that their opinions and beliefs are the only right answers are impossible to talk and reason with. Even if you bring up an undisputable fact, they'll just ignore you the moment they think they've lost and pretend you and everything you've said never existed in order to preserve their pride. Speaking from experience, you're better off walking away from them and spending your time and energy on something that will actually have a positive influence on your life.