Rosie's research primarily explores the intersection between dietary-controlled conditions and disordered eating. During her PhD, she developed a model of disordered eating in gastrointestinal conditions, and a screening tool to identify those most at risk. More recently, she co-designed a psychoeducation intervention to prevent disordered eating in children and young people with type one diabetes (the PRIORITY trial). More broadly, Rosie designs and evaluates integrated health system interventions to improve child health.