This slave was not the type to change easily. When mistress Fox noticed that, she took it as a challenge for herself and she had to find a way to deal with him. So she used her high heels to scare the shit out of him. He had to endure high heel trampling and he had to lick her smelly feet before she was done with him. He changed after that.
Mistress Sarah likes to humiliate and punish people who mess with her. This guy did today and he had to be punished. The mistress did not wait for long to do it. She chose to make her lick her friend lick her feet and this was done as she filed her feet. Her friend ate the dust and also ate the nail clippings. And that is how she learned her lesson.