 Perhaps she thinks the crowd is cheering for her. Her power has clearly grown as he gets weaker. And she likes the feeling of power. She speaks for the president when he can't or when he is napping. She tells his team and staff when he is available and when he is not. She likes being in control. And he goes on from there. I don't think that's just a rough take. I think he also has people that know to go with that take. Man. Man.