Lady Scarlet was wronged by this guy and she had to punish him. She did not hesitate to do it and she made sure that the guy learned his lesson the hard way. The mistress used her high heel boots to dominate the guy by making him lick them. He was lucky she did not trample him. After he had licked them clean, the mistress was able to forgive him.
This guy was a snitch and lady Scarlet was not going to allow him continue with that behavior. So she did what she felt was the most appropriate thing to do in that circumstance and she used her boots to trample his mouth and his head to pump some sense into him as well as make him realize that she would not tolerate that behavior. He learned the hard way and never did it again.
Lady Scarlet was not going to let this slave get used to the idea of disappointing her. He had done that once and she did not want it to be something he did often. So the mistress used her boots to dominate him and she made sure it was degrading as well as humiliating. He had to lick the soles of her boots despite the fact that they were dirty.