For Love of a Warrior — Julia Byrne

Sent out from her father-in-law's castle to face Owen de Beaufort's avenging army, recently widowed, young Elise Rouchard expects to endure unspeakable torment before she is killed. Her only hope of evading her fate is to convince de Beaufort that she can help him in his quest for vengeance, after which, she's going to retire to a cloister where she'll be free of men who use women to achieve their ends.
But when Owen sets eyes on Elise he starts making plans of his own that don't include her fleeing to the nearest convent. Drawn by her integrity and courage, he decides to marry her, despite her horror at the very idea of another husband. He's not going to mistreat her, so why should she object? But when Elise's objections turn to desperate action, Owen has to discover the truth about her first husband before he can heal the hurt that was done to her. Nor is Elise the only one who is intent on stopping Owen's marriage.