Y/n Henderson, Dustin's older sister, has spent most of her teenage years looking after her brother, his friends and hanging out with her friends Nancy Wheeler and Johnathan Byers. However, when the dreaded Upside Down returns, she finds herself becoming close with the one and only Steve 'the Hair' Harrington... - Steve Harrington x Fem! Reader - Slowburn - S2-S4 - Netflix owns all of the characters except y/n :)