The aim of this socio-evaluation research was to assess the impact of the margro-twinning intervention and to identify the particular social dimensions of the customers served by the Relevailles Group. This body provides psychological support to mothers seeking assistance following adaptation difficulties caused by the birth of a child. Women’s socialisation has “culturalised” maternal instinct. It has become a social phenomenon with specific models and problems arise when mothers fail to comply with them. Guided interviews were held with 13 clients and six Marraine volunteers. Interviews were carried out at people’s homes and had an average duration of two hours. There is a clear improvement in the physical and psychological condition of women as a result of the support provided by Marraine volunteers. Overall, we found a decrease in the sense of guilt and an increase in the sense of competence and autonomy in fulfilling the role of mother. We also found that the social and family network of the beneficiary customers is very weak. These mothers with young children live in significant isolation. These women showed a significant distance from the social representation of the perfect mother. We also noted that the Group’s intervention practices and strategies promote the dissemination of an emancipating mother model for women; that is to say, a role involving apprenticeships which must not deny the other needs of women.