This paper attempts to tell the story of an evolving relationship, an emotionally and intellectually powerful as rewarding one. It refers to two levels of the relationship, the personal and the professional-the influence of the person, Vina Mazumdar, and her work on me, as a person and on my work and perhaps, to some extent, it refers to the reverse as well. It also relates to the complex, changing and often ambiguous relationship between the women's movement in India and child care issues. The title tries to reflect the perception that sisterhood is an act of becoming, as much as a state of being.