Anyone living there would have remembered a woman coming to live them with a newborn infant, even if for only a week before going off to Seattle.
We know Stanley Ann wasn't living with Obama Sr., because Obama Sr. was not even aware at the end of the August (when he filled out an immigration form) that he had had a new child born that month.
And now we know Stanley Ann wasn't at her parents with her new-born infant.
If she had the baby at a hospital in Honolulu, then after leaving the hospital she would have gone either to her husband's or her parents' place.
But the facts are that she did neither. The first sighting of her with infant is in fact Seattle.
It is not a long drive to Seattle from where little Steven Bernard Dunham was born to Stanley Ann Dunham.