"Women with Alcohol Use Disorder (AUD) and other Substance Use Disorders (SUDs) have different etiology, mortality, relapse antecedents, clinical presentation, and course of the disorders than men with AUD/SUD (see Epstein & Menges, 2013; Epstein et al., 2018 ). For instance, relative to men, women report higher comorbidity of mood, anxiety, posttraumatic stress, eating, and personality disorders (Rosenthal, 2013); and women are likely to drink alone, in secrecy, daily, in response to relationship difficulties (Zweig, McCrady, & Epstein, 2009) and in response to negative emotional triggers (Abulseoud et al., 2013). Women tend to have social networks that include family members and romantic partners with SUD (Leonard & Homish, 2008) who do not support recovery (McCrady, 2004). Many relapse antecedents are more prevalent in women than men, including being alone, negative affect, interpersonal problems and relationship distress (Walitzer & Dearing, 2006). Mediators of treatment on AUD outcomes also may differ by gender; mechanisms of change generally relevant to women likely include alleviation of negative affect, enhanced coping skills and self-care, improved interpersonal functioning (Velasquez & Stotts, 2003), and greater emotion regulation (Ashley, Marsden, & Brady, 2003; Timko, Finney, & Moos, 2005). Gender differences in clinical presentation of addiction, relapse antecedents, and mediators suggest that treatments tailored to women's concerns may enhance access to treatment and yield more positive outcomes than gender-neutral programs. Treatment utilization for alcohol use problems is lower for women than for men. Women may be more likely to seek help if single-gender treatment is offered (Cucciare et al., 2013; Lewis et al., 2016), however, female-segregated treatments have been found to be efficacious only if they include female-specific programming (Epstein & Menges, 2013; Holzhauer, Cucciare & Epstein, 2020)"--