Let's slow it up a little. YOU have no idea if they are looking, "towards the sniper's nest window....". That is your Opinion. It is Not Fact. And the waving of a hanky is a valid consideration here. Funny how the hanky has Not been mentioned during this discussion.
Comrade Storing,
She HAD the hanky IN her HAND already and was probably waving IT at JFK and Jackie WHEN she noticed Lee HARVEY Oswald in the WINDOW after he'd fired HIS first, MISSING-everything, shot at "Z-124," and CONTINUED waving it, HOPING the Secret Service guys would NOTICE her friend's POINTING to the WINDOW.
-- Tom