You gave your sub a challenging assignment: she has to call you over video chat and masturbate for two minutes. Each time she calls you, she needs to be in a different location. Additionally, each time she calls you, she has to have removed one piece of clothing. She cannot cum until you tell her she can, and she cannot touch herself other than the two minutes she's on video chat with you. The deal also comes with other rules and rewards...as long as she can hold out.