India, May 17 -- It has now been 100 days since 84-year-old Nancy Guthrie vanished under mysterious circumstances. Her family, including Savannah Guthrie, have grown increasingly frustrated and exhausted, Page Six revealed.

There have been no significant breakthroughs or leads in the case despite months of searches, media appeals and law enforcement efforts.

Nancy's disappearance has attracted national attention partly because Nancy Guthrie is related to Savannah Guthrie. Savannah has reportedly remained deeply involved in efforts to keep public attention focused on the case.

Sources close to the family told Page Six that the emotional strain surrounding the case has become increasingly severe as each passing week brings fewer visible ...