Jmo not sure whether or not he is a “real” cowboy or rancher matters...we already know he is likely to be proved as far worse than a fake cowboy.
And regardless of Kelsey having grown up on a farm, I have doubts as to whether she was seeking a “farmer.” She had trained and entered into a very high tech, skilled career, more likely ideally she would want to be with a similarly motivated person. But for whatever reason, they clicked, and she must have seen a great deal in him at some point to move away, start a new life and even begin a family with the idea of marriage.
And at some later point, it all went wrong. She may not even have known how strongly he was reacting to their shakier or recently ended relationship, maybe he stewed quietly while he plotted. He may have seen that she didn’t really need him in her life, and that in order to have full access to the baby, he decided it would be best if she was not in the picture. Am just guessing, like everyone else, but I just don’t think the ranch/farm aspect was a factor for her. Jmo