It all depends on who killed Jo, for the reason why they had moved the body. One persons logic in that situation, is another mans Tomfoolery.
For instance if G.R was the perp, well of course it makes sense to dispose of the body 8 days later and for it to be found. Afterall he knows he can't come home and explain away Jo's dissapearence for ever can he?
He has to do something. Reporting her missing is far better than admitting he killed her. A missing person, actually has to go missing for it to be taken seriously.
A real good point to note would be the killer would be hoping there will be no signs of obvious death on the body. Don't forget the strangulation marks were not all obvious. The perp would be hoping big time the Police wouldn't suspect murder. He's hoping it remains a missing persons enquiry, or death by misadventure. That makes my theory she was dumped on Christmas day all the more likely. The body has to go missing for X amount of time. Early hours Christmas morning is the quietest time of year. Perfect for a body disposal run.
Someone in that situation just doesn' know how she can go missing, and how it relates to her reaching home. What do they do? Stage her things have gone with her, and she never reached home? Or make it look like she reached home? Hard choice to call isn't it? But by the looks of it, the right one. It's certainly beating the Police so far.
She either never made it home, or she did. neither us, or the Police know for certain.
Know what you mean, but I lean towards accidental death when someone, for whatever reason, tried to restrain her or prevent her from leaving. Imo, it wasn't a physically violent argument or fight. Nor sexually motivated attack or robbery
And I suspect this took place outdoors or in a vehicle. Someone she knew. Possibly intended to be just a brief exchange or discussion. Ended up getting heated but not physical. Then, shockingly for the killer/s, she was there, dead. Or appeared to be dead
To be suspected is that the killer/s closed the flat door and took off. In shock and fear - self preservation mode. It could have been an argument about money. Money is usually involved somewhere. Maybe she owed money. We have no reason to categorically dismiss the possibility of drugs. We haven't been informed one way or the other
As to whether or not the killer/s hid the body for several days before placing it near the quarry entrance, we don't know. The police should have known once the pathologist had concluded his report, but they've chosen not to say, for some reason
What most of us will agree upon is that had the killer/s wished to, they could have ensured the body would never be found, or at least arranged it so that discovery was remote
Whatever the case, though, GR would have been front and centre. If he's the perpetrator, he would have known that. If someone else was responsible for JY's death, they would also have known GR would immediately fall under suspicion
Whether or not her 'phone, bag, keys, etc. remained in the flat or disappeared with her, wouldn't have changed much, imo. Young women with good career prospects and besotted with their boyfriends, enjoying life, etc. don't simply walk away with what they have on their backs. There would have been an intensive search period and then (if the body had been efficiently disposed of/hidden) it would have become a cold case, a crime mystery, with occasional reporting sightings. The grief, loss, pain, remorse, etc. would have been the same, only without resolution
So at the moment, I don't think leaving her bag, boots, 'phone etc. in the flat was part of any great master plan. Nor do I think it was premeditated murder. Just a situation gone wrong, imo, with possibly the flat door banging closed as JY was with her killers. Or the killer closed the flat door and took off with the body in order to plan what to do next
JMO