When Pan Am flight 103 fell from the sky over Lockerbie, Scotland, in 1988, Lisa Gibson's life changed forever. Her brother Kenneth was just 20 years old when he died at the hands of terrorists. "Is there any way I can see my brother's death not be in vain?" asked Gibson. Gibson went on a journey for answers. "I would never have chosen this path for my life, said the Colorado Springs resident. In 2009, she met face-to-face with Muammar Gaddafi. "He did basically say he was sorry for our loss, although he never took responsibility," she said in an interview with 7NEWS. A lawyer by trade, Gibson is guided by her faith. For years, she's been doing the unthinkable, traveling to Libya on a mission of peace. "The most effective weapon in the war on terror is love. Because at the heart of terrorism is hate. And the only effective way to fight that battle is to walk in the opposite spirit with love," she said. After more than two decades of work and people's revolution, Gibson feels the Libyan people have now found their own voice. Now with Gaddafi's apparent fall, she feels a sense of justice in her brother's death."Ultimately we always thought we would see justice in some way, and whether we got a conviction or not to me wasn't important. I knew at some point he would come to justice. For me it's encouraging, said Gibson.