Psychotherapy with families in situations of vulnerability involves many difficulties, as it includes the complexity of working with multiple links associated with the precariousness inherent to the experiences of helplessness and violence at different levels. Aiming to produce knowledge in this field, in order to substantiate clinical practice with the family group, the objective of this work was to investigate the linking patterns prevalent in families in situations of vulnerability, developing thoughts about some of the challenges and limitations of family psychotherapy. To this end, a qualitative clinical investigation was carried out, using the case study method, both interrupted early by the families. An analysis was proposed based on some of the main psychoanalytic contributions on the links, among which are those of Bion and Pichon-Rivière, in addition to the theoretical postulations on the notion of double-bind of the Systemic Theory. It was observed that family bonds were marked by anti-emotions and double-bind situations. It was found that sometimes an early interruption of treatment does not necessarily mean the failure of family psychotherapy. In the researched cases, it was possible to understand that the treatment reached its function of listening and space for reflection, given the limitations of the qualities of the links, specific to each family.