The focus of this study is the speech professional mediation among a group of family members of deaf children and adolescents who are being treated at a Bilingual Clinic for Deaf Individuals, that belongs to the Speech Therapy Course of UFRJ. The purpose of this investigation is to show how mothers narrate experiencies of their interaction with their deaf children, during the interactional co-construction activity, and how the speech therapist tries to raise awareness among family members regarding the communication process, as well as generate reflection among them, providing for both agency and empowerment. The theoretical framework articulates macro and micro levels in interface with health and education policies, taking into consideration the discussion of professional discourse in the deafness field, together with the theoretical and methodological framework of narrative, and interaction analysis, through analytical tools, in order to better understand the situated professional practice. The methodology is qualitative and interpretativist, and it is based on face to face interaction analysis of two Group meetings, as well as ethnographic observation during consultation involving family members and their deaf children. The analysis presents the moment of the Group creation, and the co-construction of interconnected narrative sequences, with the participation of the mediator and the children s mothers. Different types of narratives have arisen, such as of hypothetic, general, and of specific nature. The narratives have evaluation and different points according to different functions in the interaction, in order to achieve identity construction purposes, raise problems and questions, counsel, present alignments and instruction understanding, during interaction. Mothers have changed their understanding in respect of interaction and communication with their children when narrating and participating of the group interaction. Regarding the mediation activity, the speech therapist, besides co-construing narratives, has made interventions through questions, instructions and evaluations, designed to each mother, according to her purposes. The participation in this place of understanding co-construction was productive, and it helped to raise awareness among participants, as well as construe knowledge concerning the critical role of mothers for the development of their children in their daily communication. The study brings relevant contribution to the practice of reflection in the deafness field, helping in the understanding of professional counseling practice, and in the discussion of political aspects related to education and health of deaf children.