Barbara Holland was the best friend of Nancy Wheeler. At the start of the series, Barbara displayed some insecurity over Nancy's growing popularity and her new boyfriend. She agrees to drive and acompany Nancy to a party and, while trying to open a can of beer with a knife, cuts herself. Later, in the pool alone, Barbara's wound bleeds on the pool and attracts the Monster and pulls her into the Upside Down's version of Steve's pool. Hurt and disorientated, she tries to climb out of the pool but is dragged out and killed off screen.
Her death is finally confirmed when El astral projects to her rotting corpse, to a distraught Nancy.
Nancy Wheeler - Best Friend