Dune Road by Jane Green
In the Gold Coast town of Highfield, Connecticut, recent divorcee Kit Hargrove has joyfully exchanged the requisite diamond studs and Persian rugs of a "Wall Street Widow" for her true dream home: a clapboard Cape with sea green shutters and sprawling impatiens. Her kids are content, her ex cooperative, and each morning she wakes up to her dream job assisting novelist Robert McClore.
But when a figure from the past arrives just as the shifting financial market turns Highfield upside down, Kit is forced to realize that her blissfully constructed life and blossoming new romance aren't as foolproof as she thought...