"Seem" is the key word. She manipulated and groomed him starting when he was 12. She refused to leave him alone when ordered to, after her arrest, and continued to sexually assault and manipulate this minor child.
While committing statutory rape on the then sixth grader, she, already a mother of 4, age 34, who truly knew how to prevent it, allowed herself to become impregnated with this boy's child, forever binding him to her. Then, even after her arrest, while violating the conditions of bail, this predator again became impregnated by her victim, a second time.
So he was now the father of two children by his rapist.
He is Samoan. In that culture, family ties are very important. And it is a matriarchal culture. Not patriarchal. So family lines stem from the mother, not dad, making the connection between his kids and their mother extremely vital to him.
Vili was deprived of his innocence. He was deprived of his childhood. He did not have his first sexual experience with an equal. Instead, it was with an adult 22 years his senior. An adult who groomed him and sexually abused him.
By dint of her pregnancies, and his culture, he was forever bound to the woman.
He had no opportunity to develop as a normal child or teen. To date other kids. Go to school proms. Have a first kiss with another kid his age. Go to college. Live a childfree life while still a teenager. Meet a mate of his own choosing when he became an adult capable of making that choice.
He expresses happiness but I think that's just what he has to tell himself to survive. His life was ruined, IMHO.