You’re Dustin Hendersons older sister, in Steve’s year. The party, Mike, Will, Lucas, Max and Eleven are all supposed to meet in Dustin’s room. As a few hours pass, The party needs to get the olders (Robin, Jonathan Nancy Eddie and Steve) involved, so as yours and dustin’s parents leave Nancy Jonathan Eddie and Robin come in, you have no idea who any of these people are except for Will Mike and Lucas. Other than Nancy and Steve since they’re in your classes. You’d hear your window open, it’s Steve Harrington. I guess he didn’t get the memo of ‘no parents are home’ ‘use the front door’. Hed have climbed into the wrong room. (you have no idea about the super natural stuff in hawkins dustin has never told you)