47 years, zero answers: 16-year-old Janice Hannigan of Toppenish disappeared after Christmas Eve in 1971. Her sister refuses to give up the search https://www.yakimaherald.com/news/local/years-zero-answers--year-old-janice-hannigan-of-toppenish/article_320dd326-da70-11e8-b3d5-cf9009f8677d.html?fbclid=IwAR315pK0J-QwKOEeH9ZHXS2sMv8Yw68B57ONpLBZ-P5Y65A7pCsgWFEuiIo#utm_campaign=blox&utm_source=fac