Project Background: SUD is common among women Veterans, and on the rise among younger women Veterans. As more women Veterans seek treatment at the VA, there is likely to be an increased need for evidence-based treatment of SUD. To the investigators' knowledge, the PI has developed the only gender-based treatment approach that has shown significant outcomes in a pilot trial, on multiple domains. This proposal represents an opportunity to evaluate its efficacy with women Veterans, including younger OIF/OEF Veterans.