Punish her.

You look at her sternly. "Now Mandy, I can't let this slide. You need to be punished." Mandy looks at you with terrified eyes. "I'm so sorrysorrysorrysorry." She whimpers.

"Sorry isn't enough." You sit at the edge of the bed and pull Mandy over your knees. "Please no Master" she begs as you lift a hand but you don't show any compassion. You bring it down with **** onto her right cheek and Mandy squeaks loudly in pain, you hear a fizzle and you remember that the manual said she would enjoy whatever you do. You lift your hand again and spank her hard she squeaks again but not as loudly. After a few more slaps you feel something wet dripping down your leg and you realize that she's enjoying it so much it's made her horny.