Lullaby for My Sister — Nancy Barone

When Valentina and Lucy Mancino's mother died, and their father turned to alcohol to cope, Valentina quickly understood it was up to her to run the household and take care of her little sister. But Valentina was only nine years old. And when their new step-mother moved in, along with her two sons, Val also knew things were about to change for the worse.

Fifteen years later, while Lucy is flailing in life, Val is running a successful career, but she's also hiding a terrible secret. She soon discovers that her former home is suppressing secrets of its own -- many unspeakable truths are dying to be told.