The Bargain by Mary Jo Putney

THE BARGAIN is an expansion and rewriting of THE WOULD-BE WIDOW.

To keep her fortune, a beautiful heiress impulsively weds a penniless officer dying of wounds received at Waterloo. But when the blasted man hasn't the grace to die, she suddenly finds herself with a healthy, vibrant husband who wants to renegotiate the terms of their bargain -- and ultimately possess the heart of his bewildered bride..