To live with a parent struggling with a borderline personality disorder has impacts. This article explains the results of a qualitative study conducted with six teenagers who describe their life experience with their mother who has this disorder. They reveal that teenagers are often constrained to take on a parental role with their mother while they were really young. These young teenagers have been neglected on various levels. The discussion of this article puts the emphasis on the importance on offering an intervention adapted to their reality and their needs.