You're Dustin's older sister. Your mom won't let him go to the hellfire club unless you go with him and wait for him to finish. You absolutely do not want to do this- You make a deal with Dustin that if he and the hellfire club can convince you by the end of the month you'll go. Now you have the entire hellfire club following you around like ducklings (and Eddie Munson might have a little crush on you)