Mistral Hearts. Valley of Sylveren, #3

A diviner who's sworn off romance. An heiress who's all business. Fate brings them together, but the fear of love could drive them apart. Calya Helm is determined to take over her family's shipping company and lead it to greatness. Nothing will stand in her way. Not the stuffy trustee appointed by her doubting father, her shady ex-business partner out to fix his tarnished reputation, or even the smidgen of guilt she feels for unintentionally disrupting a Sentinel's mission.
Nocren Lowe is a Sentinel of the Valley with a gift for divining using the wind. Haunted by the risks of his magic and the pain of past betrayals, he's convinced there's no room in a diviner's life for romance. He's content to do his work as a ranger and avoid forming serious attachments, even if the wind keeps whispering about the importance of a certain ambitious young woman. When Calya's probe into suspicious company documents aligns with the Sentinels' investigation into a group of elusive mages, she strikes a deal for them to travel together.
In the confines of a small ship, the mutual attraction she feels with the brooding ranger burns hot, and they agree to a single tryst. No sentiment allowed, and once the voyage is over, they'll go their separate ways. But their arrival in town only leads to more questions as carefully kept secrets unravel. When an old foe rises with a scheme that threatens Calya's homeland with a deadly blight, she must decide what-and who-she's willing to risk.
Mistral Hearts is the final cozy fantasy romance novel in the Valley of Sylveren trilogy. If you love spicy reluctant allies-to-lovers, snarky banter, and adventure with a touch of mystery, get swept away in Mistral Hearts!