Chocolate Footprints

Sophie leaves chocolate footprints. When she laughs, everyone becomes blond. When she's happy, the air is filled with the chirping of birds, and when she's sad everything becomes blue.
She is thirteen when her father drops her off at Uncle Dave's. No one wants her. Her mother died and her father and relatives are afraid of her. But Uncle Dave welcomes her.
With the help of Uncle Dave and Miss Doyle, the eccentric, red haired housekeeper, Sophie digs into her family history to figure out why she is so different