I’ve got the feeling that SM’s death was an impulsive act, and her body disposal was a lot more thought out.
I feel the perp was tracked in the location because of his phone, and the gps signal it puts out. It still baffles me in today’s climate, that people committing crimes take their phones with them, a walking tracking device! Esp someone of young age, who’s apparently quite tech savvy and smart (being an electrician and bring a supposed next elon musk wannabe according to friends).
If he was in fact, traced from his gps to the area of SM at the same time, then it’s a huge mistake. It’s why I believe he was under the influence at the time. I think he’s committed the act, and then hidden SM in the same area, and then Come back many hours later to dispose of her body. He allowed time for any substance to leave his system, becoming more level headed and more lucid in thinking. He’s also doing this late Sunday arvo/early evening, when he feels safer in the fact people might not be out at that time. I believe the 5pm ping of SM’s device is accurate and it happened while the perp was disposing of her body.
Once he’s more clear headed, he’s left his phone at home to dispose of the body, which is why LE cannot get a clear location on where she is.
I think of Jesse Baird and Luke Davies, how LE only found their location from the perps direct information. LE literally drove past the spot where they were buried while looking somewhere else. I guess if they didn’t get the info from the perp, they might not have found them at all.
I also feel there is a good chance some of, if not all of the crime was captured on cctv by happenstance.
This is purely speculative and IMO.