Goddess Nika has many ways in which she can pass a message and today she did it by forcing this guy to endure her facesitting. The guy knew he did not have a say and he refrained from arguing too much because he was afraid that if he continued that way, she would get pissed and might make his punishment worse. So he manned up and he took his punishment.
Goddess Nika did not like the fact that this guy was obstinate. She did not want to deal with such a guy and since she was already dealing with this one, she chose to punish and humiliate him so that he would not look for her for any reason. The mistress used facesitting to do it and the punishment was cruel to him and fun to her and it worked.