One could call it stubbornness. Another could call it determination. It just depends on the situation and whether or not they want to be in the dog house. I have yet to see your mother give in to a challenge. She doesn’t like to fail. This was one of the amazing attributes she had when I met her. It was what drew me to her. She had something that I so desperately wanted to have. The drive to never give up no matter the obstacles.