This paper aims to report the clinical experience of treating, jointly, a mother and her son at a public university Psychosocial Treatment Center as part of the training in a Multi-professional Internship Program in Mental Health. This paper will describe some sessions, that were held so that mother and child could have a space to "be together" and to "do things together", considering the importance of promoting moments of identification and strengthening the relationship and the bond. Consequently, the clinical sessions and the written reports of those sessions were recovered, as well as the performances (drawings, stories, and playful moments) of "doing things together" between mother, child, and the therapists. Narrating this experience allowed the elaboration of the therapist's work, expanding it to new possibilities of thinking the experience of creating a maternal bond. That was achieved from the discussion of matches and mismatches between mother and child, from managing and framing the treatment, as well as from insights during that experience, articulated with a psychoanalytical reading of Winnicott.