Following Helen Bruder's 1997 study of patriarchal criticism and The Book of Thel, this essay outlines the limitations of reading this poem through phallic logic, and calls instead for a thinking ‘in, of, and from the feminine’, via Bracha Ettinger's theory of a matrixial borderspace, the shared space created by co-emerging subjectivities, where self and other develop in ‘a continual readjustment of distances, a continual negotiation of separateness and distance’. The aim of this paper is twofold: first, to demonstrate how Thel is a model of this expanded subjectivity, and second, to show how within the space of the poem it offers an account of the intrauterine experience, that mysterious existence gestured at and immediately foreclosed in Freud's account of the uncanny. In its capacity as a space of multiplicity (of one to become more-than-one), the figure of the matrix enables us to understand the processes of subjectivity between Thel, the Lilly, Cloud, Clod of Clay, Worm and the Vales of Har as encounters, as co-creating shared spaces, which moreover demonstrates how Blake's feminine – at least in the curious case of Thel – appeals to contemporary post-Lacanian models of subjectivity.