You bring something to mind that I had meant to mention eventually but I have been
sort of mulling it over for a while first.
I have felt that these two seemed to be like epoxy ingredients. Apart they might
not be too dangerous but when put together they seem to have become deadly to those around them.
That is exactly where I've ended up after putting the pieces (most of them anyway) together.
If I ask myself the "whys" of this case, I come down with some very interesting bits of info:
1). We know that Biomum was looking for Zahra (if we are to believe her, anyway).
2). We know that DSS was recently looking into the parents (per family), and that DSS had looked into the family in the past (per neighbors, school officials, etc).
3). We know there was a mysterious "home inspection" looming on the horizon.
4). We know that money was a huge issue for these 2 (rents not paid, checks bounced, rental property sold illegally, etc.)
5). We know that both AB/EB (and others) were deeply involved in virtual world game play. (If you want to get a better understanding of how deep, you'll have to sleuth that yourself.)
6). We know that Elisa recieved 10,000 dollars from someone overseas, with payment spread out over a period of a year (per family members).
I can fit all that info, except 5 and 6, into my existing theory. And I'm pretty close to fitting 5 into the theory as well, but am trying to gain missing pieces of the puzzle. But anyway, those are the existing bits of information that I consider relevent to understand why AB/EB might have had reason to want Zahra to disappear. If there were another crime being committed here, one that went on for some time and was about to be found out, I can definitely see BOTH EB and AB panicking and doing the unthinkable.
(I still have serious questions about whether or not #6 actually belongs on this list. It may, or it may not. But it is still worthy of speculation,imo, so it stays on me list)
JMO