Background Domestic violence is a significant public health issue with survivors experiencing short- and long-term physical, sexual and psychological health issues. Given this, survivors of domestic violence use healthcare services at an increased rate compared to the general population. Therefore, general practitioners (GPs) are well placed to support survivors of domestic violence. However, many practitioners do not feel ready to address this complex issue of domestic violence. Further, there is no research exploring GPs’ role in supporting families through family court in the context of domestic violence. Methods This study used qualitative methods. Fifteen GPs participated in individual in-depth interviews. The interviews were audio recorded with consent, transcribed verbatim and thematically analysed. Results The majority of participants were female GPs working in metropolitan settings. Four themes were generated from the data: on different planets, witnessing legal systems abuse, weaponizing mental health in family court and swinging allegiances. Participants had negative perceptions of family court and felt that it operated on a different paradigm to that of general practice which caused difficulties when supporting patients. Participants supported survivors through instances where the court was used by perpetrators to further their abusive behaviour or where the court acted abusively against survivors. In particular, perpetrators and the family court used survivors’ mental health against them in court proceedings, which resulted in survivors being reluctant to receive treatment for their mental health. Participants struggled with their allegiances within their patient family and usually opted to support either the mother, the father, or the children. Conclusions Implications of these findings for GP training are evident, including curriculum that discusses the intersection of mental health diagnoses and legal proceedings. There may also be a place for health justice partnerships within general practice.