Because of You by Cerise Deland

Love does not advertise. Love is not proud.

But when a young woman has nothing left but pride, she places an ad and hopes for a husband to treasure.
Miss ‘Daisy’ Molyneaux is desperate. All her family is dead. Her home in Normandy, attacked by mobs. Now that the little general has abdicated, she has a chance to gain back her lands. But she needs a husband who will help her regain her rights. So she pays to post an advert for a husband.
When the man who answers is not one she could ever love, but his nephew could be, can she accept his proposal?
Garrick Ruxton appears to her like a golden-haired hero, a handsome creature who saves her from an imperfect marriage. Garrick vows to accompany Daisy to France and, in the bargain, solve his own problem. His shipments, meant for British forces on the Continent, constantly go missing. He knows not who or how or why the thieves steal his goods. Worse, someone has attempted to kill his uncle. Daisy, too.