Savannah Guthrie shared an emotional Mother's Day post for her mother, who is missing. : Nathan Congleton/NBC via Getty Images Savannah Guthrie made an emotional post about her mother, who went missing in February. Nancy Guthrie disappeared from her Arizona home, and authorities believe she was abducted. Savannah reiterated her call to help, asking anyone with information to come forward. Savannah Guthrie posted an emotional montage of her mother, Nancy Guthrie, who is missing, on Mother's Day