The Lost Daughter by Elena Ferrante
When Leda’s daughters leave home to be with their father in Canada, Leda anticipates a period of loneliness and longing. Instead, she feels liberated, and decides to take a holiday by the sea, in a small coastal town in southern Italy. But after a few days of calm and quiet, things begin to take a menacing turn. Leda encounters a family whose brash presence proves unsettling, at times even threatening. When a small, seemingly meaningless, event occurs, Leda is overwhelmed by memories of the difficult and unconventional choices she made as a mother and their consequences for herself and her family.