Green conducted much of her business at the offices of the Seaboard National Bank in New York, surrounded by trunks and suitcases full of her papers; she did not want to pay rent for her own office. Later unfounded rumors claimed that she ate only oatmeal, heated on the office radiator. Possibly because of her usually dour dress (due mainly to frugality, but perhaps in part related to her Quaker upbringing), she was given the nickname "the Witch of Wall Street".