Talley, Marcia Dutton, 1943- Hannah Ives mystery series.

"Hannah Ives's sister, Georgina, has some surprising news. An ancestry DNA test taken as a joke has revealed she is part Native American, and Hannah's test has similar results. The link seems to come from their late mother. But how? As Hannah dives into constructing her family tree, she uncovers a heartbreaking love story and a mysterious death, while DNA matching turns up two second cousins, Mai and Nicholas. Hannah and her niece, Julie, are keen to embrace their new relatives, and Julie soon grows particularly close to Nicholas. But someone wants to keep the family secret buried . . . at what price? Can Hannah untangle her roots in time to prevent family history repeating itself with equally tragic consequences?"--Publisher's description