A Familiar Shore by Jennifer Fromke (2012, Paperback)
Meg Marks is a young lawyer raised off the coast of the Carolinas. An anonymous client hires her to arrange his will, and sends her to meet his estranged family at their lake home in northern Michigan. After a shocking discovery, she finds herself caught between his suspicious family and a deathbed promise her conscience demands that she keep. Will she sacrifice her own dreams for revenge? Or something more?