I just have the beginning of my theory, rather, it isn't thought out all the way through yet:
It has seemed odd to me that Kyron wanted to go see the electrical exhibit right away, not waiting to go with his class group of 6. It's been a gnawin' at me for days now.
BANG It just hit me as to why. He knew he had to leave school and wouldn't be there for the tour.
Familial it was and he was told someone was going to be there to pick him up around 9, to be watching for ??? ~ a certain friend of the family or relative to pick him up. It could have been said as an exciting event for Kyron if say family was in from out of town for the day and they were planning to spend time together.
Now something radically went wrong, the worst scenario Kyron never expected to happen, and he died in the act of it. Something his caregivers never expected to happen. And from this tragedy, familial again, Sauvie Island came into play as it was where he was taken for placement.
What a horrific situation that would be. And it would explain everything that has happened in the last 14 days.
IMO there is a connection to SI with this person and/or the familial part again and I do believe LE has put their finger on it, just don't have all their i's dotted yet.
Realizing too that having knowledge of a crime and not giving it up to protect someone makes one as guilty as if they had done it themselves IMO
Hope it is OK to post that, if not I'll delete it.