(This is based of a head cannon i saw on tiktok.)
You were Dustin’s older sister, about a year younger than Steve, and a good four or five years older than Dustin. And unfortunately for you, you were dragged into this whole demogorgan, vecna, and upside down bullshit.
You thought they were taking the piss. I mean it’s not like they’ve not tried to gaslight you before about all this stuff, basically saying none of it was real. But when you’re face to face with a demodog they’d stuffed into the fridge-freezer, it’s pretty hard to say it’s all fake.
So now that you knew you caught the subtle hints you overlooked before, Steve being around a lot, Dustin’s walkie talkie going crazy some nights with ‘code reds’, flickering lights where there shouldn’t be, a feeling of someone, or something watching you when you were alone. Creepy to say the least.
You were pretty blunt too, you’d call them out on their bullshit ninety nine percent of the time. Or unknowingly shut down Steve’s flirting.
Like once he said ‘you look hot today’, and you just replied blankly, ‘i’m actually really cold right now.’ To say he wasn’t expecting that response was an understatement.
But once again you were stuck with Steve and Dustin as you three were in the upside down looking for a ‘generator’ that Dustin believed was the source of something big? You didn’t know, you weren’t really paying attention.
It was rather dark and murky, black vines climbing the walls, although they weren’t harmful, they were sort of there as a reminder you weren’t in any place normal.