I have two thoughts.
My thoughts keep going to Jennifer this morning. All this stuff being released about the family that she grew up around and eventually escaped from, has got to be extremely difficult for her . *hugs* to Jen.
Next. My first thought when I read about Charlie talking about killing Braden and it just being he and Josh ..... JP knew and/or promoted this thinking, imo.
imo
What occurred to me overnight about this is that JP was grooming Charlie by telling him that the two of them - Charlie and daddy - had special secrets. I think it shows that he was involving Charlie in, at the very least, watching his special cartoons and having secrets from other people, and one of the ways was by telling him that it would be "just them." Siblings often have rivalries (I don't know if they're natural or learned) but an older sibling can resent the baby that has come along, and by playing on that, Josh was grooming Charlie to think that there were elements of his relationship with daddy that only the two of them were going to share.