Published in 2017 by Alice James Books, in Madwoman McCallum expands her work to the personal by exploring the difficulties of womanhood, madness, and motherhood.

Madwoman's 55 poems use both English and elements of Patwa, the Jamaican creole language she heard people speak (but never saw written) while she was growing up in Jamaica.

The presence of this voice worried McCallum because of her family's history of mental illness (her father suffered from schizophrenia), but she felt driven to complete her work and free the proverbial madwoman.

In the poem "Madwoman as Rasta Medusa," McCallum fuses her own struggles with racial identity with mythology, while also commenting on the many histories of female rape victims being vilified.

An individual poem from the collection "Memory" was selected by poet and critic Terrance Hayes for publication in The New York Times Magazine.

[7] Emily Sterns describes McCallum's use of poetic tools, such as breaks and rhythm, to challenge the reader in the interpretation and understanding of feminism and race.