This thread is so off topic I won't be surprised if it gets pulled for review. Just saying because it's a mess in here. (ETA: sorry Salem I didn't see your warning.)
As for the way in and way out of the yard of the Celis'. In the 911 call where Isabel's Mom talks she says that the "door" is locked but in the next breath she says something to the effect that they must have climbed over the fence.
I took her reference to the door not to be the door to the house but the gate to the yard. (in a picture located on the internet and also posted to one of Isabel's threads, there is a reporter standing in front of a large wooden gate that is inset within a wall. It looks to be a possible gate to a courtyard). If the gate(s) were secured then how would someone get into the yard and then leave that yard with an awake 6 yr old? Pack her over the fence? It's a question I haven't puzzled out in my mind yet. Any ideas?
(I am still contemplating how she was removed from the house and yard, I haven't gotten anywhere near to developing a theory yet
)