Moonflower — Valentina Luellen

To Mary Kate Whitney, living with her missionary father on the Hawaiian island of Oahu, Ross Pendennis is everything she has been brought up to detest. He drinks to excess, consorts with loose women and, worst of all, he mocks her faith. And yet she finds the captain of the Moonflower dangerously attractive…
Fired by his challenging taunts, Mary Kate determines to show him that the woman he calls a ‘strait-laced little Puritan' has spirit! She is in danger of only one thing … losing her heart to a man who will never love her.