This study is a qualitative analysis of expressive arts therapy case of migrant youth to present key experiences and meanings. From 6 July to 31 August, 2022, 10 sessions of expressive arts therapy for 60 minutes per session, once a week, were provided for a 13-year-old female migrant youth who had experienced psychological trauma due to her mother's cancer treatment, migration, parents' divorce, and attempted self-harm. For data collection, we used verbatim transcripts, photographs of work, observation journals, and in-depth interviews with participants and carers, which we categorised into 'paralysed subjectivity', 'expressive subjectivity', and 'working subjectivity' using Braun & Clarke's (2006) method of central theme analysis. The outcomes of the study were categorised as "self-defeating ineptitude," "reality we don't want to face," "pouring out the pieces of a broken heart," "safe permission to hurt," "starting line alone," and "treasure found in a volcano. Through this intervention, the migrant youth engaged in a grieving process that allowed them to safely express the impact of psychological trauma, including attachment relationship trauma, post-migration adjustment stress, and the loss of home and friends. With a new understanding of self and a changed perception of interpersonal relationships with others, they integrated and reorganised their lives to create hopes for the future, which they viewed as post-traumatic growth, which is the expression of self-directed life agency. This study provides a basis for the value of expressive arts therapy as a crisis intervention for post-traumatic growth.