Currently, there are few studies which examine targeted family-focused support when a family member is diagnosed with breast cancer. Thus, the aim of this study was to explore families' experiences of participating in a family nursing intervention identified as Brief Family Health Conversations (BFamHC) following the diagnosis of breast cancer. Semi-structured family interviews were conducted with nine families (including 29 family members) 2 weeks following the family-focused intervention of three sessions of BFamHC. Thematic analysis was used to analyze the data. Families reported the BFamHC as positive and as a unique kind of family health conversation, one that afforded them the opportunity to communicate and share their experiences as a family group. A family conversation, even one as time-limited as BFamHC, offered a sense of relational sharing and togetherness, thus preventing feelings of isolation and vulnerability. Therapeutic family-focused conversations, such as BFamHC, hold promise as a useful family nursing intervention following the diagnosis of breast cancer.