I feel so sickened by the situation. I have so many questions, like everyone else I suppose, and lots of random thoughts based on coverage.
I saw a comment on the fetishising of babies in the context of this case. Not sure where. I wondered the same thing - all the redoing of vows might fit into that scenario. Basically I wonder if they liked the idea of a fresh start over and over again - including new wedding vows, pregnancy and babies, but didn't want to deal with the babies once they got past babyhood and it became more difficult to project your own idea of who that baby was onto an actual child who could say No, throw a tantrum, refuse to eat their broccoli, etc. Their 2 year old is apparently a normal weight.
In parents who are extreme narcissists, there can be an element of disgust with the children once they become their own little people, and resentment at the fact that they are interactive and becoming independent.
In some people swept up in delusion, there can be refusal to face reality and become responsible parents with all the sheer hard work that goes along with caring for a growing family. I honestly suspect there is an element of willful delusion going on in this case. They loved all things Disney, Elvis impersonators did their repeat wedding vows - escapist cultural phenomena .
Hence perhaps not feeding the children, no proper care, and the punitive elements. Also the matching outfits - no sense of seeing them as individuals though the baby seems to have escaped the family uniform - well expressed by those quite dark in retrospect 'Thing 1'-2...10-11-12- t-shirts.
I saw in some coverage the assertion that she was 16 and he 24 when they married, and that he had basically whisked her off from high school one day, driving to Texas. Also the assertion that her family of origin was very dysfunctional.
Poor children. I wonder how they will ever recover from this, what sort of relationships exist among them, whether they will accept the decision of the brave teen who summoned help.