This article offers a relational perspective on the discussion of obligations and freedoms in Kuria women's voluntary associations in Tanzania and explores the impacts of these activities on sociality and public spaces. The constitution of a successful businesswoman is dependent on her membership in various cooperative groups, and her new rights and freedoms reside in the ambiguity between her sovereignty and group belonging. Historically an important means for self-extension, cooperative work remains pertinent in regulating the impacts of new resources. Diverse mediators and conversions have played a key role in building the Kuria person, making available a range of transformative options and revealing the possibilities for mixed forms. It is suggested that an engagement between Melanesian and African perspectives on personhood can contribute to a dynamic and temporally situated study of a social construction of mutuality.