Songs without Words by Ann Packer. Follow-up novel by the author of Dive from Clausen's Pier (which I loved). "Liz and Sarabeth were childhood neighbors in the suburbs of northern California, brought as close as sisters by the suicide of Sarabeth’s mother when the girls were just sixteen. In the decades that followed–through Liz’s marriage and the birth of her children, through Sarabeth’s attempts to make a happy life for herself despite the shadow cast by her mother’s act–their relationship remained a source of continuity and strength. But when Liz’s adolescent daughter enters dangerous waters that threaten to engulf the family, the fault lines in the women’s friendship are revealed, and both Liz and Sarabeth are forced to reexamine their most deeply held beliefs about their connection."