Sister of missing Minnesota woman Maddi Kingsbury says her pleas for help on TikTok generated more tips

The morning of March 31, 2023, for Megan Kingsbury began with a funny text exchange with her younger sister, 26-year-old Madeline "Maddi" Kingsbury, who lived in Winona, Minnesota. But that would be the last communication, Megan Kingsbury says, she would ever have with her sister.

Later that evening, Megan Kingsbury says her mother, Krista Naber, reached out to see if she had spoken to her sister recently because Naber had not heard from Maddi Kingbsury in hours. Megan Kingsbury says she wasn't worried at first, but then Maddi Kingsbury did not respond to her new messages or phone calls either.  "…regardless of how busy she was or what she had going on, she always got back to us," Megan Kingsbury told "48 Hours" correspondent Peter Van Sant. Her interview is featured in "The Disappearance of Maddi Kingsbury," an all-new "48 Hours" airing Saturday, April 13, at 10/9c on CBS and Paramount+.

Megan Kingsbury and her family quickly became concerned about Maddi Kingsbury, a mother of two who worked as a clinical research coordinator for the Mayo Clinic. Since most of the immediate family lived hours away from Maddi Kingsbury, they reached out to her friends who lived closer. Megan Kingsbury says she contacted Adam Fravel, who lived with Maddi Kingsbury and was the father to her kids. She says Fravel told her he was also concerned because he had not heard from her either. Fravel told Megan Kingsbury he was at his parents' home with the kids nearly an hour away. Megan Kingsbury asked Maddi Kingsbury's close friend, Katie Kolka, who also lived in Winona, if she could check on her sister. Kolka told Megan Kingsbury when she got to Maddi Kingsbury's home, it was dark and no one was there. But, she says, Maddi Kingsbury's vehicle was parked in the driveway.