The children who were there that day are not adults. The oldest was 12 or 13, then 11, and 9.
There are older children that both DW and CB have, but none of them live there nor were they there that day.
While it is possible SW was hit by a car, the area was extensively searched including by trained dogs of various types including bloodhounds. It seems an accident like that would leave some evidence. However, i have thought about this as well... Not necessarily a specific vehicle, but hmmm... Could be why they know the year range on this truck so precisely.
LE is not going to be able to track every phone on that tower, from what I understand. Only the ones they specifically are searching. Also, this person is driving a 20 year old truck. Maybe they don't have a phone. Or just didn't bring it since they were driving in an area with poor service for phones.
Is the scream being described as "heart-rending" now? Honest question. Previously it has been described as "muffled" and "animalistic". Yet the scream hearer did nothing for an hour and a half according to her. I have heard children really screaming and I got myself up even though I knew their dad was outside with them. Because it it really happened (the father handled the situation, but still it was serious). So, i agree with LE on this.