Inclusion Criteria:  women aged over 18 years who had experienced a traumatic event, and a PTS score of 64 or lower on the PTSD checklist for DSM-5 (PCL-5) developed by Weathers et al. (1993), revised by Weathers et al. (2013), and translated into Korean by Kim et al. (2017).  Exclusion Criteria:  presence of psychiatric conditions with hallucinations and delusions, and diagnosis of an intellectual disability that would make understanding the intervention procedure difficult. Although a standard cut-off was not present in the PCL-5, women who exceeded 80% (64 points) of the total score were excluded to rule out high-risk women with severe trauma.