American women joining Islamic State of Iraq and Syria (ISIS) have increased and their roles evolved beyond auxiliary and domestic provisions, demonstrating both agency and tenacity for pursuing, recruiting, supporting, and spreading extreme Islamist ideals and terrorism. Social learning theory was applied to information gained from open-source court cases as a way of examining how thirty-one U.S. women acquired, maintained, and acted pursuant to radicalization to religious terrorism for ISIS. Internet functionalities, reasons, roles, and support types for radicalization and illegal activities for ISIS were examined using self-, dyad-, and group-classifications. A gendered interventive program based on social learning theory’s extinguishing of radicalized ideology and behavior was outlined.