So, is Veronica the guy's daughter? I mean, she'd be about 20 at that point since at the time the letter was written, it was 10 years prior and she was at least 10 years old. And that line she utters about him being, "Such a good Daddy," certainly made it seem as though she's his daughter going by what Detective Martinez said about the mother coming back and saying that her daughter is with her "daddy," now.

And it's unfortunately not uncommon for the abused to become the abuser.