This article examines how transformative agency arises in families where parents are struggling with aspects of caring for young children. The mechanisms of how volitional action develops into transformative agency in everyday settings are not well understood. A fine-grained analysis of change is presented in the case of a parent who resolved difficulties relating to her daughter's feeding. This case is situated within a broader dataset relating to diverse Australian parenting support services. Through double stimulation, parents used multiple auxiliary tools to construct new motives, enabling them to expand understandings and develop new possibilities for action. Evidence of transformative agency was apparent in longer trajectories in which the conditions of parenting were transformed. Relationships between expansive learning, double stimulation, and transformative agency are conceptualized dialectically, offering fresh insights into the dynamics of transformative agency 'in the wild'.