child of prophecy by Juliet Marillier

The powerful fantasy novel Child of the Prophecy successfully concludes Juliet Marillier's Sevenwaters Trilogy, which

chronicles a fated family's three-generation struggle to preserve the failing magic of ancient Ireland. The daughter of

a forbidden romance, Fianne has been raised in isolation and trained in magic by her loving but remote druid-father,

Ciaran, and her ruthless sorceress-grandmother, the Lady Oonagh. They send Fianne to Sweetwaters to live among relatives

who had no knowledge of her existence and who may have instigated the death of her mother, their sister Niamh. Fianne

has come to carry out her grandmother's long-planned vengeance on the clan--and on the Old Ones, who are the source of

Ireland's mystic power. Despite her mother's death, Fianne is reluctant to harm her Sweetwaters kin. But if she lets

them live, the Lady Oonagh will kill both her father and Darragh, the handsome young horse tamer who has captured

Fianne's heart.