Appearing with her were the parents of Megan Kanka, 7, who was raped and strangled July 29, allegedly by a convicted pedophile who lived across the street. Also on hand were the parents of Amanda Wengert, 6, of Manalapan, Monmouth County. She was abducted from her home March 5, sexually assaulted and beaten to death. A teenage neighbor with a history of sex crimes has been charged with murder and kidnapping in that case, which prompted the bills Whitman signed into law yesterday.