Uk had divorce granted by parliament 1857, perhaps the US tended to have similar legislation ..in the Session of 1832 one Lord Eldon was in favour of allowing the wife’s application for a divorce on the ground of her husband’s simple adultery but this case was lost - in the Colonies (Aust) also, the wife did not get equal "opportunity" for some time.
I am looking at around 1908 for a divorce