Since their 2010 self-titled debut, The Secret Sisters have brought their spellbinding harmonies to songs that untangle the thorniest aspects of life and love and womanhood. In the making of their new album, Mind, Man, Medicine, Alabama-bred siblings Laura Rogers and Lydia Slagle found their songwriting transformed by a newfound sense of self-reliance and equanimity, threading their lyrics with hard-won insight into the complexities of motherhood, commitment, compassion, and self-preservation in...