Libby and her friend Abigail Williams, 13, disappeared on February 13, 2017 near the Monon Bridge in Delphi, Indiana. Their bodies were found the following day.
“We are willing to do whatever it takes to bring their killer to justice,” Patty told Radar on the anniversary of his 14-year-old granddaughter’s disappearance.
“We are still here. We are still fighting.”
Libby has been hailed as a “hero” after she captured the man police believe killed her and her friend on a Snapchat video with her cell phone.