IIRC the first ransom message was received by TMZ on the Monday, and, purely through SG being who she is, the story went national as soon as the disappearance was announced on the Monday. Onoy my opinion but I think if you were going to kidnap someone for ransom, you’d wait until the story broke before making the first ransom demand. You’re wanting to instil terror, increase the likelihood the family will pay you through fewr of what you’ll do to their loved one.
A day of them not knowing a thing about what has happened to their relative could be important in amping up that fear.. if the first the family knew of NG being missing was from a ransom note rather than naturally finding out she’s gone themselves, I think it changes the dynamic. If there’s an element of ego to the perps, I think you’d also want both the initial shock of the disappearwnce and then a later ransom demand coming in to be two separate stories in their own right, which you wouldn’t get if you sent a ransom demand on the Sunday morning straight after the kidnap, before NG’s disapearance was diacovered.
JMO