Mistress Justine felt that this guy was not responsible and she had to make him a responsible person. She was not ok with the things he did and in an effort to make him change, she got him to lick the soles of her high heels. It was humiliating, but it was what he needed in order to change and be the kind of responsible person she wanted him to be.
When this mistress was told what her slave had been doing, she was pissed. She was so shocked at what her slave had done that she had to teach him a lesson. She used her foot fetish to do it. She made him lick stinky socks and she had him lick her dirty feet as well as the soles of her home slippers. He learned never to mess with her.