I recently stumbled upon this topic while diving into LGBTQ+ literature, and it’s fascinating how many hidden gems there are. One that stands out is 'The Seven Husbands of Evelyn Hugo' by Taylor Jenkins Reid. While the protagonist isn’t a mom for most of the story, her later life explores her relationships with women, including parenthood themes. Another great pick is 'The Price of Salt' by Patricia Highsmith (later adapted into the film 'Carol'), though it focuses more on the romantic relationship than motherhood. For something more contemporary, 'The Stars and the Blackness Between Them' by Junauda Petrus features queer Black girls navigating love and family, with one character’s mom playing a pivotal role.
If you’re into speculative fiction, 'The Once and Future Witches' by Alix E. Harrow has a secondary character who’s a lesbian mom, and her storyline is both tender and fierce. I love how these books weave motherhood into queer narratives without making it the sole defining trait—it’s just part of their rich, messy lives. Makes me wish there were even more stories like this!