Lady Rockabella wanted to teach this guy to stop being unreliable because it was a negative trait that would not help him in any way. So she used her best foot fetish to deal with him and to degrade him. He had to endure the humiliation that she subjected him to but at the end of it all, he learned what the mistress wanted him to learn as he knew he had no subject.
Lady Rockabella was mesmerized by foot fetish and she wanted to try it. She had watched videos of how other people did it and she felt that she would also have fun doing it. So she got this guy who she could tell was into her and she used her sexy feet to tease him and turn him on before she asked him to lick her feet according to her instructions.