The End of Men is her first novel.
At Electric Lit Sweeney-Baird tagged "seven books that show, in some way, what a world could look like without men," including:
The Female Man by Joanna RussRead about the other entries on the list.
A sci-fi classic, this weird and spiky novel uses multiple, parallel universes to explore gender, reproduction (children are born through the merging of ova), and radical ideas of childcare. One of the four worlds of the novel, Whileaway, is a female-only utopian society in which men supposedly died many hundreds of years ago (starting in “PC 17,” PC being Preceding Catastrophe) from a plague to which women are immune.
--Marshal Zeringue