I definitely do not think the murder was premeditated. But I think the molestation was ongoing. I believe the note was written AFTER, as a way to explain why she was dead (because they called police and others).And I think they called all their friends to the house, in a very public display of flouting the "orders" in the RN, so that there would be no doubt that the "kidnappers" killed her because they spoke to people.
In a "real" kidnapping, I can see parents still calling police regardless of whether they were instructed not to. I'd do the same. BUT no way parents would ever call all their friends, clergy, etc- OTHER people to come to the house. Bad enough to call them, but to have them all driving up to the house, parking their cars, etc. indicates clearly that these parents had NOTHING to fear from that note. (because they wrote it and because the victim was already dead).
In a "real" kidnapping, I can see parents still calling police regardless of whether they were instructed not to. I'd do the same. BUT no way parents would ever call all their friends, clergy, etc- OTHER people to come to the house. Bad enough to call them, but to have them all driving up to the house, parking their cars, etc. indicates clearly that these parents had NOTHING to fear from that note. (because they wrote it and because the victim was already dead).