Has there been any past examples of PF being enamored or loving toward the little daughter? So far I don't see child custody as
being a motive here, unless I've missed something.
I believe Kelsey's successes wore on PF, she had accomplished
a lot at her young age and he still hadn't left the womb.
Macho men don't take kindly to females who outpace them
professionally. She probably made a lot more money than he did.
She had her independence, her home, her career. What did he have? A few cows (or mommy did), a sideline playing rodeo cowboy, don't know how successful he was there but many of
these guys play at it but don't earn much income.
I think he resented her all around. And wanted to move on to
someone more on his level. Kelsey had outgrown him and he
knew it and hated her for it.