Barbara Claypole White tells her readers that she usually has a theme of mental illness in her stories. Her writing speaks in an authentic voice. The characters present as people you know or someone you can relate to. They are real families having some kind of trauma that will tear them apart and possibly put them back together again. Two of the main characters in The Promise Between us are Katie and Callum and they were both in serious trouble with their mental health when they married. Introducing a child into this marriage only made matters worse. They are not dealing with their problems and they will not go away…