Multiply minoritized learners face racialized, gendered, and ableist hierarchies of mathematical ability that shape the organization of schools and classrooms and can significantly challenge access to identities as mathematical learners and practitioners as well as to fundamental human dignity. Classrooms and everyday interactions can perpetuate or interrupt these conditions. Contributing to questions about the relationships among identity, power, and dignity in mathematics learning, this article presents a positional interaction analysis of Gisela, a Disabled 10th-grade Latina student, as she took up, challenged, and renegotiated identities of mathematical thinker, learner, and community member over the course of one school year.