Three years after the unsolved murders of teenage best friends Libby German and Abby Williams, Libby's mother says she is unhappy with the pace of the police investigation. "We're not getting anywhere," Carrie Timmons told Inside Edition. Libby, 14, and Abby, 13, were killed after going for a walk along an abandoned railway line in Delphi, Indiana, on Feb. 13, 2017. Their bodies were discovered the next day. A suspect allegedly captured on Libby's cell phone has never been found.