Inclusion Criteria:  Age >18 years Cardiologist-confirmed diagnosis of SCAD in the past 1-12 months English-speaking and reading Internet access (via computer or mobile device).  Exclusion Criteria:  Terminal illness with life expectancy <1 year Severe mental illness requiring urgent psychiatric intervention (e.g., active suicidal ideation) or past-year psychiatric hospitalization) Significant cognitive impairment preventing informed consent determined by study staff or medical record review (e.g., medical history of cognitive impairment) Deemed unable to complete research procedures (e.g., group sessions or surveys) per clinical judgment of study staff Unavailable for intervention sessions (e.g., schedule conflicts)