Goddess Lena saw how this guy mistreated his juniors and she was not ok with it. She felt that she had to dominate the guy and teach him never to do that and that is exactly what she did to him. He had to learn never to do it again and that is why she did what she did to him. He learned his lesson although a little too late.
Goddess Lena hates liars and this loser was one. She did not want to entertain anything he did so she dominated him cruelly. The mistress used her ass because besides choking him and facesitting on him, she also wanted to fart on him. She knew how degrading that was and she wanted to do it. And there was nothing the loser would do to stop her from doing what she wanted.