If you'll look at my previous post, I looked up Oregon Revised Statutes on abuse of a corpse so I may have answered my own question -- the 8:40am crime may indicate the time Holt loaded her body into the SUV with the intention of disposing her. Which would mean the other crimes were committed, and she expired, prior to 8:40am.
Well, whatever the reason, I really am curious about their "8:40" decision. Maybe someday we will find out.
I hate to think there was a long period of time during which she was conscious and fearful.