Youth ageing out of the child welfare system become parents at rates two to three times higher than their non‐child welfare system involved peers. Substantial literature acknowledges that youth ageing out who are parenting are vulnerable; yet, little is known about their lived experiences. Social capital, or the actual or potential resources available from one's network, can provide essential resources for the wellbeing of parents ageing out. This qualitative study examined social capital of mothers ageing out from the perspectives of both mothers and service providers. We conducted small group interviews with 13 mothers ageing out and 14 service providers. Data were analysed using thematic analysis. Findings revealed the use of a social capital framework delineates that mothers lacked beneficial social relationships and, consequently, support. A lack of trust coupled with a desire to break intergenerational patterns and norms contributed to understanding why mothers ageing out may not capitalize on resources that providers often considered available. Based on findings, we conclude that providing mothers ageing out with additional opportunities to develop trust, positive relationships with mentors and extended services may help to disrupt intergenerational patterns of maltreatment and promote child and family wellbeing.