The Berry Pickers by Amanda Peters

 Every summer, a close-knit family of indigenous people from Nova Scotia heads to Maine to help pick the blueberry crop. One day, the youngest daughter, Ruthie, vanishes. The family desperately searches for her but there is no trace. And at the end of the summer, they sadly head back to Nova Scotia--but they never give up hope of finding her. At the same time, we're introduced to a girl named Norma. She is the daughter of very overprotective parents. Norma keeps having dreams of another family, but Lorene her mother keeps telling her they're just dreams. But it turns out they're really memories because yes, Norma is indeed Ruthie--though she doesn't find that out till decades later. It's a fascinating story of the family that never stopped looking for Ruthie and the girl who always felt like her life was a puzzle with some of the pieces missing.