This article studies the growing and changing cultural identifications of one early adolescent Mexican American girl as represented by her engagements with literacy. Her writing behaviors in particular manifested a changing cultural identity that reacted to and represented her response to a changing world. Her bilingualism and biculturalism manifested a dialogic innervation of distinct voices and truths, particularly set in the Trump-era United States. Through a theoretical framework of cultural hybridity and bordered identity, this study analyzes the complex linguistic, developmental, and cultural identities of a young Mexican American woman in the rural South.