Orphan's Blade. Aubrie Dionne

In the battle for a kingdom, every alliance counts…   Princess Valoria only cares about her music and her destiny: to unite the Kingdom of Ebonvale with the House of Song and succeed where her father has failed. As if that weren’t challenge enough, she must contend with her marriage to a battle hungry brute of a prince…until she falls for his adopted brother, the orphaned son of a blacksmith. But with a horde of undead gathering to attack Ebonvale, Valoria will have to choose between her personal happiness and the safety of the kingdom. Now the fate of Ebonvale rests in her heart.