I think the important aspect is it was not done BY her but FOR her. She claimed on at least one occasion she did it “by reading the WSJ.”
You are 100% correct. The General Counsel for Tyson foods was the intermediary. In a number of cases she should have been subject to margin calls ( highly likely if you are betting against the general trend in the market) but surprise, surprise that never happened. The only thing HRC did was write the cheque for the initial investment.
The only time she's opened the WSJ was when Goldman paid her speaking fees wrapped up in the Journal. s/