Objective This study explores the experience of an individual and family therapy youth suicide intervention from the perspectives of seven psychotherapy triads (young people aged 12–18, their parents/caregivers and therapists). Method Data were collected through semi-structured individual interviews and analyzed using consensual qualitative research methods. Results Four domains were identified: Focusing on the youth-parent relationship, individual therapy for young people and their parents, conjoint therapy, and public service structures and systemic practice that facilitated tailored treatment. All participant groups valued intervention that improved the youth-parent relationship; however, they held different views about its influence on suicidality and recovery. Separate youth and parent therapy was crucial for facilitating the tailoring of treatment and enhancing the reparative potential of conjoint therapy. Barriers to productive intervention included inaccessible, fragmented, and siloed treatment that excluded parents, stigmatizing clinician responses, and acute care that was not attuned to need or developmental context. Helpful intervention was systemically and attachment-informed, multi-disciplinary, individually tailored, and integrated freely available specialist therapy with crisis and inpatient care. Conclusion A relational, nuanced, and flexible approach is needed to tailor youth suicide treatment in the context of the complexity of youth-parent relationships.