Healthy Recovery After Trauma Study

Inclusion Criteria: * individuals with a history of sexual trauma meeting past-month diagnostic criteria for PTSD (meeting diagnostic status on the DIAMOND and score greater than or equal to 36 on the PCL-5) and * reporting current experiences of trauma-related mental contamination (greater than or equal to 10 on the PEMC). * 18 years of age or older * fluent in English * Patients on psychotropic medications will be included if they have been maintained on a stable dose for at least 4 weeks prior to beginning the study and are willing to maintain a stable dosage throughout the study period; this procedure allows for a broader range of participants and avoids having outcomes assessment confounded by the initiation of medication during treatment. * Finally, patients must be willing to refrain from additional trauma-related treatment for the duration of the study. Exclusion Criteria: * We will exclude individuals diagnosed with psychological conditions that may be better addressed by alternative treatments; these conditions include * psychotic disorders * dissociative identity disorder * unmanaged (i.e., unmedicated or currently experiencing a manic/hypomanic episode) bipolar disorder * bulimia nervosa * anorexia nervosa * imminent risk of suicide (i.e., intent/plan) * severe substance use disorders.