Questions I have:
Were all 3 family members up at the time? One might think Jayme would have been in bed.
Has it been reported what the victims were wearing? As in, perhaps Denise was wearing a nightgown, pajamas or robe, that might indicate she was already in bed.
Was it normal for the family to be up at that time of night? Did Jayme have a set bedtime? Or did she often stay up late?
If all 3 family members were up, or even 2 of them, were they waiting for a visitor, perhaps a friend or family member, to stop by for a moment? Or for a visit? The hour was late, I know, but people who work evening shifts might visit with someone else who works evenings.
Could they have been waiting for an acquaintance to stop by? To borrow a tool, return something borrowed, to speak to one of the family members? To drop off something James had forgotten at work?
Or could a coworker have said he was coming by after his shift ended to drop off something James or Denise had left at work?
Just brainstorming to think of possibilities.
I am still wondering if it could have been someone who knew at least one family member. Someone local.