“…The importance of addressing the psychosocial challenges faced by AYA siblings as part of comprehensive family care has been highlighted (Alderfer et al, 2010;Australian Government, Cancer Australia, & CanTeen, 2008;Royal Australian & New Zealand College of Psychiatrists, 2011); ongoing assessment and monitoring of AYA siblings' distress and unmet needs is central to the development and provision of effective targeted services (Nolbris, Enskar, & Hellstrom, 2014). However, family-and sibling-focussed services are currently lacking(Australian Government et al, 2008;Royal Australian & New Zealand College of Psychiatrists, 2011), and means are limited for the health system to address even the mental health needs of patients (Kiernan, Meyler, & Guerin, 2010;Rushton, Bruckman, & Kelleher, 2002). This is complicated by the general absence of AYA siblings from hospitals, and the transport burden placed on parents if siblings are to access hospital-based services (Alderfer et al, 2010;Patterson, Medlow, & McDonald, 2015).…”