This mistress is hot and naughty. She loves to make money doing the things she loves to do and that she is talented to do. So she gave this guy some naughty jerk off instructions and he loved them so much that he had one of his best orgasms ever with those instructions. He loved it so much that he paid her for them and she did not even need to ask.
This mistress felt sorry for guys who did not have girlfriends and who had to jerk off to porn all the time. She felt like she could do something for them. So she made a naughty video for them from a regular girl and in it, she instructed them how to jerk off and how to enjoy what they did and to make sure it was the best ever. It became a hit.