Valley of silence [large print] / Nora Roberts.

Summary:

"The battleground has been chosen for the final showdown between those selected by the gods and the minions of the vampire Lilith. But there is one vampire who dares stand against her. And his love for the scholarly queen of Geall will complete the circle of six - and change the face of eternity. Having traveled through the Dance of the Gods to the land of Geall, the circle finds themselves convincing then training the people of Geall to defeat Lilith's vampire army. The Valley of Silence is a forbidding place for the battle of all battles, but the circle continues to prepare through magic and a few early stakeouts that test their strength individually and as a team. Moira finds herself playing the roles of warrior and royal, as she follows the tradition of her people and prepares to take the crown before leading them into battle. And if that isn't enough, she finds her thoughts turning to Cian more often than not. So what's a chaste and intelligent young woman to do when given less than a month with the man she loves, who's not a man, but a vampire? And how will the people of Geall fare against an army of blood-thirsty vampires who have had centuries to prepare?"-- Goodreads.