The Once and Future Witches by Alix E. Harrow
In this alternate, fantastical history, witches are real. Or, they were real. Now, women's ability to do witching has been made illegal for women. While women can do magic, it is frowned upon, and the only thing they are allowed to do is little charms to help themselves with "women's" or household work. In 1893, James Juniper is on the run and ends up in New Salem, where her estranged sisters Beatrice Belladona and Agnes Amaranth reside (and yes, there is a reason for those names!). She soon finds a purpose and joins the local women's rights movement - first interested in women's suffrage, but wanting more . She wants to bring witching back. Agnes finds herself pregnant and is first hesitant to join the movement her sister wants to create in case she puts her baby in danger. Beatrice is an assistant librarian at the New Salem College, but has secretly been delving into research about women's witching, and how to bring it back. Juniper's sisters end up...