Hudson, Bowen, and Nielsen (2011) seek to use evolutionary biology as a form of metafeminism, or as an ultimate cause to understand the roots of patriarchy. Patriarchy as a system that ontologically creates women's discrimination and legitimates violence is widely accepted within a range of feminisms and has been the foundational argument of feminist scholarship. The concern that is raised here in regard to Hudson, Bowen, and Nielsen's article is not the validity of their concern with investigating the relationship between inequity in family law and violence against women, but the basis of their argument in evolutionary biology. In this essay, I bring posthumanism and especially new (vital) materialism as a way to build bridges with the feminist evolutionary analytical approach (FEAA) and constructivist or linguistic-oriented approaches in International Relations (IR). Posthumanism is an approach to social theorizing that addresses the impossibility of the nature/culture distinction in novel ways.