wrote, "by pursuing her father's interests she not only won his praise, she shared his pleasure in making money." Her mother, Abby Robinson, died on February 21, 1860, at the age of 51, but her $100,000 estate went to her husband, except for an $8,000 () house for Hetty. In June, Hetty's father sold off his interest in the whaling fleet and invested in William Tell Coleman's shipping firm, becoming a partner. While in New York, he also invested in government bonds, which paid 6% interest in gold. Back in New Bedford, Hetty's aunt Sylvia gave Hetty $20,000 () in stocks as a gift. While staying with her father in New York, Hetty met her future husband, Edward Henry Green. Edward Robinson died on June 14, 1865, leaving Hetty about $6 million (), which included $919,000 in cash, a warehouse in San Francisco, with the remainder in a trust fund from which she received the income. Yet she had no control over the principal. Hetty's aunt Sylvia Ann Howland also died in 1865, soon after her father. In September 1863, Sylvia Howland had willed half of her $2 million estate () to charities and entities in the town of New Bedford; the rest would be in a trust for Hetty, but once again without her control of the principal. By December, Hetty challenged the will's validity in court by producing an earlier will, made in January 1862, that left the entire estate to Hetty, and included a clause invalidating any subsequent wills. The executor of Howland's will, Thomas Mandell, rejected this earlier will, claiming it to be a forgery, and was challenged in court and the case, Robinson v. Mandell, which is notable as an early example of the forensic use of mathematics, was ultimately decided against Robinson after the court ruled that the clause invalidating future wills, and Sylvia's signature to it, were forgeries. After five years of legal battles, Hetty was awarded a settlement of $600,000 (). Marriage Edward Henry Green of Vermont learned the business trade in Boston before working in the Far East for the next 20 years. By the age of 44, he was a partner in Russell Styrgis & Company, and a millionaire. Yet Hetty's father stipulated in his will that Green would not inherit Hetty's money, which was to be "free from the debts, control or interference of any such husband." On July