Undead Or Alive

Life was normal for Violet . Well as normal as it can be for someone with parents that favour you, over your younger, emotionally damaged, sociopathic, sister.
Of course she didn't think a short visit home from University, would lead her to nearly being eaten by her parents, and finding out that her sister, Heather, has gone.
She isn't missing, Violet knows where she'll be, because jokingly, they planned for this day, and Heather gave her rules so she will stay alive.
Violet just has to make sure she follows them.
Easier said than done.