AFTER 10 YEARS OF PERFECTING HER STAGECRAFT, MARY GAUTHIER RELEASES LIVE AT BLUE ROCK In conversation and in public, Mary Gauthier comes off as a practical, no-nonsense woman. Stoic, even. Which wouldn’t seem unusual, except for the fact that her songs carry so much emotional punch, they can leave you staggering. She has a way of burrowing into that hole so many of us carry inside our souls, and emerging with universal truths that show we aren’t so alone after all. Gauthier knows where our exposed nerve endings lie because she’s probed her own so deeply, finally learning to unlock the fear and loneliness that controlled her escape-seeking trajectory for so long before songwriting — and the sobriety that drew it forth at age 35 — gave her a steadier flight path. But even though her six albums have received countless accolades (and 2005’s Mercy Now earned her the Americana Music Association’s New/Emerging Artist of the Year title, and 2011’...