This is the first article that I have seen that said Celina was on the FAMILY'S LAPTOP computer. They must have shared the computer and just taken it room to room.
This is either a sex crime or not a sex crime.
If this was a sex crime, LE might still be looking for Celina's body unless this was the perps first-time experience. Even SO's have to begin somewhere, right? Or, if it was an experienced perp s/he might consider her/himself to be 'superior' and felt no need to fully disappear Celina's body; no evidence on Celina, blanket(s) or anywhere near the discovery site, or other crime scenes, etc.
If this was not a sex crime and Celina was intentionally murdered we might speculate this was the result of Celina having found / witnessed something that would cause unwanted trouble for the perp?
Rough-play gone awry? Accidental? Not likely, why 'hide' Celina's body?
One wonders if the family had set a schedule as to when each member could use the laptop?
Was 9:00 PM a typical time for Celina, or for someone else to be using the computer?
Did Celina happen to sit down at the computer immediately or some time after it had been used by another member of the household?
Did Celina witness something on the computer someone did not want her to witness?
Perhaps an already-logged in FB account / page?
Or....
Was Celina being involved by an unknown, someone who was grooming her either via on-line email or visits via knock-knock on a basement door or window?
Did Celina leave the dwelling of her own free will that evening to meet up with a someone unknown to the family / LE?
Was the blanket part of an "evening picnic"?
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Of course, all of the scenarios above are speculation.
Applying an Occam's Razor perspective, we ask: what is the
most likely scenario?
Given the multitude of missing young girl cases that have been discovered to have been a sex crime, we might assume the same in Celina's case.
Family or family 'friend', or a stranger?
Applying an Occam's Razor perspective, we ask: whom is the
most likely perp?
Given the multitude of sex crimes having been committed by a family member or family friend, we might assume the same in Celina's case.
Primary crime scene inside or outside the dwelling?
Applying an Occam's Razor perspective, we ask: where is the
most likely location of the primary crime scene?
An answer probably depends on whether it was a family/friend or stranger.
At this point it is not practical for me to expand on this tree since I am not privy to additional case evidence and at the moment I do not recall statistics necessary for additional logical speculation.
Anyone else up for the task?