Ellen Sousa now lives in Spencer on a small farm with animals, veggies, and many native plants that have earned it certification as a Wildlife Habitat and Monarch Waystation. But it was not always so. As a child Sousa tramped the woods with her father and read Who Really Killed Cock Robin, an environmental mystery by Jean Craighead George. My daughter Betsy also read this book in sixth grade and she determined at that moment to become an…