Mistress Sheela was out to get her way and she did not want anything to get between her and her way. That is why she used her facesitting fetish to deal with him. She had to make sure that she dealt with him in a way that no one else had and that is why she choked him with her hot ass and she made sure that he learned his lesson and that he did all that she wanted.
Mistress Sheela was pissed off at this lawyer because he had lost a case she had given to him. She was pissed at him as it looked like a simple and straightforward case. So she could not understand how he could lose it. She was pissed off at him and she had to make sure that he learned to prepare better. She wanted him to appeal it and to win it.