Crown of War and Shadow

Sorrel has spent her life keeping her head down in a village that would turn on her in a heartbeat. She's a healer, which is suspicious enough in Anathos, where magic has been outlawed since the Savior trapped the Dark King and his demon army in a gateway of light called the Fulcrum. Her real secret is worse: she can see the exact moment of a person's death.

The Fulcrum is failing. Demons are slipping through, and when evil reaches her village, Sorrel takes the blame. She escapes with a box from her hidden past and a task she never asked for, carrying a crown south to a warrior queen who may hold the truth about who Sorrel really is. Her escort is Merc, a mercenary who names his price for safe passage: one night in his bed.

This is J.R. Ward's first romantasy after decades of Black Dagger Brotherhood, and it reads like a quest fantasy with the heat turned up slowly. First person, single POV, secrets on both sides.