Because of You by Dawn French

The old millennium turns into the new. In the same hospital, two very different women give birth to two very similar daughters. Hope leaves with a beautiful baby girl. Anna leaves with empty arms. Seventeen years later, the gods who keep watch over broken-hearted mothers wreak mighty revenge, and the truth starts rolling, terrible and deep, toward them all. The power of mother-love will be tested to its limits. Perhaps beyond . . .