You're still obsessed with the "why" of Sadie's theory and studiously avoiding the when and the how. We can all play the game you're playing. I don't suppose you can provide any other example of loving parents covering up the accidental death of their child whilst on holiday but I don't keep on demanding you supply examples! I have already stated that I don't accept the Jewish / bloodline elements of Sadie's theory but you can't seem to get past that. Why not?
I'm sure I can provide many examples of seemingly loving parents covering up the death of a child after a tragic, unintentional incident. While on holiday may be a tad trickier. You however seem unable to provide even one example of a child who was stolen to order ( and I'm not even demanding the holiday bit ).
As to Sadie's theory as it seems to depend largely on Tannerman, a sighting that SY have all but ruled out, it would seem a waste of time to dissect it more thoroughly.