Mistress Anastasia did not like how this guy broke her trust. She had trusted him to keep her secret but he evidently did not and she was pissed at him. She acted as if she wanted to have fun with him and even teased him with her big tits. He was turned on and his guard was down. That was when she facesat him and had fun dominating him and choking him.
Mistress X felt that she needed to crush this slave because he was too mouthy for her. And it is because of the fact that she had tried to warn him against it but he did not change that she felt the need to do it. She ass crushed him and choked him in the process. She laughed at him as he tried to beg her to stop but she did not.