Do we know for sure nothing of evidentiary value was found in the home or are they just not saying? Have the parents returned to the house? Sorry, I was away Friday and most of yesterday and may have missed it. TIA
I'm sure that one reason the home has not yielded much is because her DNA would be all over the place since she lived there, as would the SF's DNA (which would also match the male SOs in his family). Even if they suspected the SF/his relatives in some way, the home is full of DNA evidence that would not help them draw further conclusions.
I had a weird thought that I'm sure can easily be dismissed. Still, it occurred to me that it may be possible that the SF was communicating online with Celina from another computer in the home. Could he himself have "lured" her outside, posing as someone else? Obviously if there was only one home computer, then that theory is already shot down. But if there are two, I guess it's always possible.