Six months after Savannah Guthrie's mother, Nancy Guthrie, disappeared from her home in Tucson, Arizona, the NBC "Today" show anchor said the family is "begging for help" in a new Instagram post on Saturday morning. "Our hearts are in ruins," Savannah Guthrie said, adding that she and her siblings "spend every waking moment thinking of her, longing for her, looking for" their mother. Nancy Guthrie, 84, did not have her phone or essential medication when she disappeared from her home in the early morning hours of February 1. An undated photo of Nancy Guthrie, shared by Savannah Guthrie on August 1. Advertisement AdvertisementAdvertisement Advertisement"We will never stop looking for answers - and we will never stop looking for the light," Savannah Guthrie wrote.