On the season 4 premiere of Heart of the Matter, “Same Love” singer-songwriter Mary Lambert opens up to Elizabeth Vargas about how experiencing childhood trauma, including sexual assault, being diagnosed with bipolar disorder, and a difficult relationship with the church as a queer woman, led to her intentionally misusing alcohol for many years. Now two years without alcohol, the Grammy-nominated singer-songwriter explains how writing music and poetry acts as a healthy outlet for her, with a mission to share songs that are, as she describes, “productive and helpful.”