Extortion

9 year-old Emmie asked her 10 year-old sister, Zoe to playa game of Monopoly with her. “No,” Zoe replied. “I don’t want to.” Emmie’s answer, “OK, now it’s going to cost you $20 and you still have to play the game or you won’t wake up tomorrow morning.” Guess who paid the $20 and played the game?