The Companion

Margot is an orphan who is unlucky in life but lucky in choices. After losing her family in a car accident she ends up at the Palmer House. She is the only lucky girl to get her own room (night terrors = no roommates) and then luck happens once more as a rich family have chosen to have her come and stay with them.

She is to be a companion to the family's daughter, Agatha, who cannot speak, is mildly catatonic, but otherwise healthy. During her stay at the family's home strange occurrences happen and Margot isn't sure things are really as they seem...

What a fun read! I had a hard time putting this down and if not for having to shovel food in my mouth I probably wouldn't have stopped at all