The family therapy which took place for 4 years about Sylvie, an adolescent who was treated in a day hospital, shows the family’s pathogenic, symbiotic way of functioning, which is very hard to understand due to the trivializing, conformist speech that is produced. Sylvie has always managed to show genuine cooperation with the psychologists and the medical staff so that we have successfully helped her improve the chaotic situation she was in. Now she can describe her own case with more appropriate words.