I'm leaning towards suicide, the fact she ( presume it was her) deleted her fb that night is telling.
The other most significant fact for me was the neighbour going back to the house for the second time.
Had Elisa threatened to suicide earlier and was drunk, and the neighbour rang D.C. Asking him what she should do, perhaps he said go back and get her to bed. That could explain why he got down their early Sunday, especially if he had been calling her.
Sadly I tend to agree Kiwi... Interesting they said FB deleted 'sometime after Friday night'. Surely they can tell exactly when it was deleted? however I don't necessarily think the deletion is telling in itself. I reluctantly joined FB to keep up with family members, but rarely check it, the 'nonsense' on there annoys me & I continually threaten to delete my account. ...that's just me.
Did something happen or was something said on FB that upset E perhaps; when did she arrive at the holiday house? Were the rest of the family there at any stage, or did she go down on Fri with them staying in town for Finals on Sat, planning to join her on Sun morning. Seems fair enough for Mum to get some 'me' time ...
But then there was some reason why the neighbour went back over on Sat night for a 'personal chat' and saw E get into bed ... Really? The only people who see me get into bed are those staying in the house with me !
So perhaps she was not in a good place - neighbour tucked her in (maybe did ring hubby - how close were they to have # etc)
If that was me & I was worried as to her state of mind I would have stayed with her ...
Other scenario, maybe E was already in bed when neighbour came over, maybe the 'personal chat' pertained to the neighbour's situation, Or maybe they had words earlier & neighbour came back (1/2 pi%%# also) to make peace, Or whatever, maybe she sat on bed and downloaded / thrashed out whatever she needed, then left ...E still in bed.
Other thing that crossed my mind was that D'Lab may have escaped over night - E work up, he wasn't there, she's gone looking, not e en bothering to get her phone or anything (mind will do a Houdini any chance and I am just pelting off after him, usually shoeless even, to the detriment of my poor feet, but I am terrified he will get run over!)
sorry for for the huge poste - just needed to get some thoughts down ..