You moved to Hawkins for your dad’s work, and he fell in love with Susan Mayfield, Max Mayfield’s mom.

You now was a step sister, and well, you always had a brother, Billy Hargrove.

You started going to Hawkins High, your last year, senior. And that’s where you met Steve Harrington, he broke up with Nancy Wheeler not long ago, apparently she cheated on him with Jhonatan Byers. Anyways, you and Steve started to flirt a lot with each other, hang outs to the school bathroom and making out sessions, him sneaking into your room at night, you going to watch him play his game, and yes, Steve was so in love with you, ever since Billy, your brother had taken his place “king Steve” and he has lost his “friends”.

One day after school, Steve saw you got into Billy’s car, with his step sis, Max. And he thought the worst of course, he didn’t knew Billy Hargrove was YOUR BROTHER

That same night, at Tina’s party, Steve didn’t came to say hi to you, or whatever, so you confronted him..