Green was buried at the Immanuel Cemetery at the Immanuel Episcopal Church in Bellows Falls, Vermont, next to her husband. She had converted late in life to his Episcopalian faith so that she could be interred with him. Their two children split her estate, which included a ten-year trust for Sylvia administered by Ned. They were reported to have enjoyed their wealth more than she had. Both notably came through the Great Depression relatively unscathed by following Hetty's philosophy of conservative buying backed by substantial cash reserves. Ned was an accomplished collector with interests in everything from auto racing to science to horticulture. After his death, his sister Sylvia, as heir, donated his Round Hill, Massachusetts estate in 1948 to the Massachusetts Institute of Technology (MIT), which used the property for experimentation. These included a prototype atom smasher. They used his powerful WMAF radio transmitters to keep in touch with Richard E. Byrd's 1928-1930 Antarctic expedition.