Article continues below advertisementSavannah Guthrie's latest public plea suggests investigators are losing hope that her missing mom, Nancy, will be found alive. The Today star implored her 1.7 million Instagram followers for help in finding her 84-year-old mother in another heartbreaking video on Monday, February 9.Speaking to Fox News on Monday, former FBI special agent Jonny Grusing, said that Savannah addressing the public rather than Nancy's alleged kidnappers "jumped out" to him, indicating that authorities have nothing and fear they're running out of time.