Article continues below advertisementElizabeth Smart said she believes Nancy Guthrie, the 84-year-old missing mother of Today show host Savannah Guthrie, could "absolutely still be alive."Drawing from her own abduction experience, Elizabeth urged authorities and the public to continue searching, emphasizing that victims can survive for extended periods and that hope should not be abandoned.Elizabeth was kidnapped on June 5, 2002, when she was 14 years old.