Mommy VDS is comes across as being in deep denial, but it's hard to believe anyone can be that gullible. She and Daddy VDS both admit that Sonny skipped out of the house very late at night--on a school night even--in violation of family rules. He's hanging out in a bar while under age. No child that behaves like this is an angel. She told Natalee's mom that Sonny isn't arrogant--he's confident. Mommy VDS is enabling Sonny to the max. Also, seems to be fairly certain that Sonny has been changing the tune he's singing to the authorities--not many innocent children lie their butts off to the police.
Oh I totally agree. She is in BigTimeDenial. I still can feel her anguish though. It's hard to watch. She is probably coming to the realization that she has raised a monster.