I have been thinking of something since yesterday..IF the parents are involved, it is possible that it was an accident. lol hear me out, I haven't lost my mind.
She apparently watched true crime and imo likely watched shows like Law and Order. I watched last seasons episodes yesterday and one struck me really hard.
A couple had a baby and said it was kidnapped along with their car but it turned out they buried her at the beach. The twist (and L and O is meant to be ripped from headlines) was that they went to sleep with baby in bed and woke up to him dead. Both ended up confessing to killing the baby, he shaking her and she leaving her to drown in the tub.
Obviously both couldn't be true but what was true was the ME discovering the baby died of natural causes. However the parents thought it was either a) their fault, rolled over and slept on her or b) the others fault. It was a SIDS death with mom sure they would be arrested for killing the baby by rolling on her. In the show they ended up letting both go because it wasn't a murder, just hiding the body and false report.
I was thinking...mom drunk, perhaps with black outs could have discovered a baby dead or rolled on her. She is young and immature imo and could see her response to be to hide the death rather than call 911. If she saw the show it might have triggered the didea to cry kidnapping.
It would also explain a man in stunned disbelief walking with a dead baby trying to decide what to do.
All of this is imo more likely than a planned killing and fits with what we know of her, not taking responsibility, drunk enough to not know if it was her who caused the death or possibility sids. It would perhaps explain the dad being involved afterwards.
That said I am still on the fence albeit halfway down. And yes it could be a nutty theory but burying her thinking they killed her but not knowing what really happened isn't impossible especially if it fit something she had seen (I don't think CA fits at all).