Diane T. Ashley & Aaron McCarver 
As the River Drifts Away [EPUB ebook] 

Luke and Caroline may have wed too quickly. Caroline Pierce never dreamed someone like Captain Luke Talbot would propose. Ignoring any misgivings, she marries the dashing captain and looks toward her happily-ever-after. But soon their marital bliss turns into civil strife as they disagree on everything from slavery to faith. As Union forces lay siege to Vicksburg, will Luke and Caroline allow God to strengthen their love before it drifts away with the river?