I agree it doesn't explain everything. It only works if BG ends up being a passerby and not being the killer. Or if BG was a friend or relative of RL who RL sent out to scare the kids for trespassing etc.
I am not suggesting this as a stronger hypothesis than the others. It just occurred to me that a vulnerable elderly person who had previously been burglarized might overreact...especially if under the influence.
I also have seen speculation around other killings spiral to include the exceptional possibilities...serial killers, gangs, sex traffickers, terrorism and so on...only to have it end up being something simpler and more local and--frankly, more likely--in the end.
That said, two victims leaves me wide open to the possibility this was a bait and kill type of scenario.
Just trying to explore all options even the mundane ones.
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