Watch: Nancy Guthrie Missing: All Siblings & Spouses Cleared in InvestigationSavannah Guthrie is pleading for Nancy Guthrie's return. Nearly one month after the Today co-host's 84-year-old mother was abducted from her Tucson, Ariz., home, the journalist reflected on the reality of the situation while urging the captors to bring Nancy home. "It is day 24 since our mom was taken in the dark of night from her bed, and every hour and minute and second and every long night has been agony since then," Savannah said in her Feb. 24 Instagram video, "of worrying about her and fearing for her and aching for her and most of all, just missing her." "We still believe in a miracle," she continued. "We still believe that she can come home. Hope against hope. As my sister says, we are blowing on the embers of hope." However, they understand that given their mother's health struggles, which require life-sustaining medications, she may no longer be alive.readNancy Guthrie Case: Investigators Address Speculation Suspect Visited House Before Abduction"We also know that she may be lost, she may already be gone," she noted. "She may have already gone home to the Lord that she loves and is dancing in heaven with her mom and her dad and with her beloved brother Pierce and with our daddy." The 54-year-old noted that if Nancy-who was taken from her home Jan. 31-is no longer alive, she and her siblings Annie Guthrie and Camron Guthrie will "accept" the news. However, she emphasized that they need to know where their mom is. "For that reason, we are offering a family reward of up to $1 million for any information that leads us to her recovery," Savannah said. "Someone out there knows something that can bring her home. Somebody knows and we are begging you to please come forward now."Photo by: Nathan Congleton/NBC via Getty Images"Let this be your sign to please come forward, tell what you know and help us bring our beloved mom home," she continued, "so we can either celebrate a glorious, miraculous homecoming or celebrate the beautiful, brave and courageous and noble life that she has lived. Please be the light in the dark." Along with pleading to Nancy's captors, the anchor added that after receiving the outpouring of support from the public and media, their family would be donating $500,000 to the National Center for Missing and Exploited Children. "We also know that we are not alone in our loss. We know that there are millions of families that have suffered with this kind of uncertainty," she explained. "We are hoping that the attention that has been given to our mom and our family will extend to all the families like ours who are in need and need prayers and need support." As the search for Nancy continues, keep reading more information on the matriarch's disappearance.

Nathan Congleton/NBC via Getty ImagesWhen Savannah Guthrie's Mom Nancy Guthrie Was Last Seen Nancy Guthrie-who is mom to Annie Guthrie and Camron Guthrie, in addition to Savannah Guthrie-was last seen by her family at her Tucson, Ariz. home at approximately 9:30 p.m. Jan. 31, per Pima County police. Savannah Guthrie/InstagramNancy Guthrie Reported MissingThe 84-year-old was reported missing by her family Feb. 1 after a concerned friend alerted Nancy's loved ones that she didn't show up for a church service that morning, police confirmed to Today. After her children searched Nancy's property for around an hour, they called authorities and reported her missing around noon. Pima County Sheriff Chris Nanos subsequently detailed the initial investigation, which included homicide detectives, at her house. "You don't typically get the sheriff out at a scene like this, but it's very concerning what we're learning from the house," he told reporters in a Feb. 2 press conference. "This one stood out because of what was described to us at the scene and what we found and located just in looking at the scene." "It's not standard," Nanos continued. "Typically, our homicide team comes out when we have a homicide, a body. This one was done simply because of what the surveyors were telling us."Nathan Congleton/NBCU Photo Bank/NBCUniversal via Getty Images via Getty ImagesNancy Guthrie's Home Declared a "Crime Scene" Following their initial investigation, authorities confirmed they believed a crime took place in Nancy's home. "We believe now, after we processed that crime scene, that we do, in fact have a crime scene," Nanos shared during a Feb. 2 press conference. "We're asking the community's help. This community has always stepped up to help us solve some pretty tough crimes. I'm looking for that again." The sheriff cited Nancy's limited mobility-she "couldn't walk 50 yards by herself"-a giveaway for concluding that foul play may have been involved in her disappearance. "We know she didn't just walk out of there, that we know," he said, adding, "There are other things at the site, at the scene, that indicate there was a-she did not leave on our own." Don Arnold/WireImageNancy Guthr