When this mistress noticed that she was dealing with this slave who did not want to obey her and do the things she asked him to do, she knew it was time to deal with him and so she did it in a way she was sure would work. The mistress knew that he had never been fucked in the ass so she used her strapon to do it and it worked.
This guy found out a few of mistress Madita's secrets and he thought he could blackmail her but she laughed at him and she punished him for even trying to do it. The mistress ass fucked him with her strapon and she made him regret that he had done it. The mistress did not care what he felt as long as she had sent him the message that she was not one to be blackmailed.