Mistress Valentina wanted her friend to learn how to smother and so she taught her how to do it like a pro. She had a loser to smother and she did all manner of things to her and she did all of this while her friend watched. It was super fun for her and her friend and her friend learned a lot in the process. The loser was in pain and was humiliated.
Mistress Valentina felt that her slave was too unorganized for her and she would not tolerate such behaviors. She had to make sure that he learned to organize himself and to do things in the manner in which she wanted them to be done. So she cruelly used her ass to facesit him and she also jerked him off painfully at the same time and she had a great time teaching him how to change.