Language brokering is a shared parent-child experience with implications for parent-child relationships and, in turn, individuals’ psychological well-being; however, few studies recognize the role of parents. This study took a dyadic approach to investigate the association between brokering experiences and internalizing symptoms, and the mediating role of parent-child alienation. Participants were 604 Mexican-origin adolescents (54% female, Mage = 12.41) and their mothers (N = 595). Both adolescents’ and their mothers’ brokering experiences were related to their own internalizing symptoms via their self-reported parent-child alienation. Mothers’ brokering experiences also affected adolescents so that when mothers experienced more negative brokering experiences, adolescents perceived greater parent-child alienation, and in turn more internalizing symptoms, suggesting the necessity of considering language brokering’s influence on members involved as a dyadic process.