Lady Shay needed this guy to know that she did not tolerate any nonsense in her house. That is why she went outside and waded in mud before she used the same mud to torture the guy. She warned him that if he did not toe the line, she would use the muddy boots to dominate him and he would have to lick them clean. He was scared and he changed.
This girl pissed lady Shay and she warned her not to do it again but the girl thought she could do it and get away with it. So lady Shay proved to her that she could not. The mistress used her boots to show her that what she thought was wrong. The mistress stomped on her and she told her that if she did it again she would only have herself to blame.