Interesting Take on the Motivations for Women's Suffrage

 From Dawn Tangan Teele, Forging the Franchise: The Political Origins of the Women's Vote (2020), p. 97:

 

And here is Teele's source, Henry B. Blackwell, What the South can do. How the Southern states can make themselves masters of the situation. To the legislatures of the Southern states ...

 

And Blackwell's argument is presented in full in Elizabeth Cady Stanton, ‎Susan Brownell Anthony, ‎Matilda Joslyn Gage, History of Woman Suffrage, 1861-1876 (1882), 929-931.