Subtitle: The Genius and Madness of America's First Female Tycoon
There probably is a great psychological drama in Hetty Green's life. She's famous for making an extraordinary amount of money as a Robber Baron, and for being an ill-dressed and peculiar miser. Her marriage was odd. Her parenting was very odd. She probably did love her family, but her miserliness was cruel to them.
She was also a woman of rock-ribbed New England manners, so she didn't leave a lot of personal information. Slack is sticking to biography, not 'novelization', so there's a fair amount of perhapsing and hypothesis. I don't find this satisfying. There might be a great adventure story left in the financial records of her swashbuckling empire, but Slack only adumbrates, he doesn't lead us through it.
ISBN: 006054256X
So wrote clew in History (19th c.).