A descriptive case-study design was used to document the implementation of a four-phase intervention for a child with autism spectrum disorder (ASD) who uses augmentative and alternative communication (AAC) in an inclusive classroom. The focus of the intervention was on enhancing social communication through peer modelling of the child's speech-generating app during news-sharing, and the intervention was developed and enacted in a collaborative partnership with the classroom teacher. Various sources of data, including interviews, observations, and data from the child's AAC system, were collated and analysed. From this analysis, three key themes emerged: (1) Enhanced Participation, (2) Optimising AAC Acceptance and Use, and (3) Increased Teacher Agency. These themes suggest positive outcomes for a naturalistic, social-communication intervention, adding to the calls for further research in this area.