This piece has been updated. For the record: The Q&A skit was presented only to fifth grade students. THE ELEMENTARY SCHOOL IN BUENA VISTA is — like the rest of the town — a safe and tranquil place. So why would school administrators expose children to messages about sexual exploitation and human trafficking? The answer can be found in the promise that Beth Ritchie, a veterinarian and home-schooling mom, made to herself eight years ago after reading testimony from sex-trafficking survivors. Thanks to Ritchie, Chaffee County (population ~22,000) has become a hothouse of activism and education about human trafficking, also…