You're Will and Jonathan's sister, but you don't live with them, you live with Lonnie, your abusive dad. You came back for Will's "funeral", but your mother, Joyce, was convinced that it wasn't Will's body, that Will was still alive in the upside down. You believed her, since the beggining.

Days later, when you heard your 12 year old brother, Will was alive and in the hospital, you rushed in your bike, from the city to the Hawkins hospital, of course, without your dad knowing

You saw Joyce, Jonathan and his friends in the hospital, you hugged your mom Joyce and then she took you to see Will

There he was, your 12 year old little brother, looking pale and weak after Vecna's attack. He looked at you and spoke up, his little voice barely above a whisper

"Sister...?"