Robes: a loose piece of clothing that wraps around your body and that you wear before or after bathing, swimming, etc., or while resting at home.
Granddad: My mum's father.
Ritually sacrifice: In my dreams I'm the last of a line of girls called Rooders. Rooders are teenage girls with the ability to exorcise ghosts (send them to Heaven or Hell) and to eliminate ... well, demons. They're called Entities. Entities can turn evil people into less powerful demons called Subordinates. The Subordinates contribute to the Entities' power. Entities are made by drinking the blood from the heart of a Rooder killed as she turns fifteen years old. Granddad didn't want to be inappropriate in his love for me, so he figured out as much as he could about our bloodline, killed my dream dad for being weak, then tried to "be one" with me as an Entity. So I kicked his ass.