As the search for Lori Vallow’s two missing children continues, the grandfather of her 7-year-old adopted boy is pleading with Lori’s newlywed husband to “do some soul searching” and help authorities locate the kids.

Lori’s husband Chad Daybell, an author who writes of religious doomsday prophecies, returned Saturday to his Idaho home from Hawaii, where Lori is jailed and awaiting extradition after her arrest there related to the disappearance of 7-year-old Joshua “J.J.” Vallow and his sister, 17-year-old Tylee Ryan, reports East Idaho News.