Kristin Chenoweth is “haunted” by narrowly avoiding being a victim of a childhood tragedy. The 53-year-old actress was supposed to go camping with her Girl Scouts troop in 1977 but had to miss the trip when she fell ill, and the twist of fate has always stayed with her because three of those on the trip – Lori Lee Farmer, eight, Michele Heather Guse, nine, and 10-year-old Doris Denise Milner – were brutally raped and murdered. In a trailer for new docuseries ‘Keeper of the Ashes: The Oklahoma Girl Scout Murders’, she said: “This is a story I wish I never had to tell. It haunts me every day. Bu…