The Beauty of Darkness by Mary E. Pearson
Lia has survived Venda—but so has a great evil bent on the destruction of Morrighan. And only Lia can stop it.
With war on the horizon, Lia has no choice but to assume her role as First Daughter, as soldier—as leader. While she struggles to reach Morrighan and warn them, she finds herself at cross-purposes with Rafe and suspicious of Kaden, who has hunted her down.
This last book in the Remnant Chronicles is so big and intimidating, but I am excited to get to it very soon since I already own the book. and I am hoping the ending will be great.