The woman, whom Kleinman did not name, has worked at Nvidia for 13 years and is often present on earnings calls for those who follow the firm's finances, she noted.
He expected high standards. In the book The Nvidia Way, about the company's inner workings, author Tae Kim wrote that office hours were long, Kleinman noted.
She wrote that an investigation into his relationship with a woman accused of being a Chinese spy is, for now, assumed to continue, and that its results may determine what he does next.
Kleinman said the man who steered the AI chip company through disastrous times, with tireless energy and ruthless determination, lost everything in a matter of days.
Kleinman wrote that the woman will have to convince investors it is business as usual: that the innovation for which Nvidia is known can continue at its existing pace, and that top talent will not leave with Huang.
A wobbly Nvidia would be bad news for the wider AI industry, she wrote, because its advancing chips drive the most powerful models and the company is regarded as something of a central bank, loaning money to other firms.
People had said the stakes were too high to break a winning formula, Kleinman reported, because the industry relies too heavily on Nvidia chips. They did not appear to think Huang would be forced out over alleged adultery.
His behaviour nevertheless cast him in a different light, she wrote: a man who could make bad decisions and cover them up.
Huang always made a point of standing out, Kleinman wrote. His feedback could be both brutal and public, and he thought nothing of pointing out individuals' mistakes in all-staff meetings.
Kleinman recalled being told Huang would not talk to the press, only for him to wander over and speak with her for about 10 minutes while press officers hovered nervously nearby.
Despite his conduct, she wrote, he probably will not be short of offers. Nvidia's rivals, she added, can scarcely believe their luck that a formidable competitor has taken himself out of the game.