https://www.vanityfair.com/news/2019/02/inside-elizabeth-holmess-final-months-at-theranos
A lot of the article is a broad overview of Theranos and Holmes but there's some more good nuggets in there.
For Holmes, the dog represented the journey that lay ahead for Theranos. As she explained to colleagues at the company's headquarters, in Palo Alto, he was named after the world-famous sled dog who, in 1925, led a team of huskies on a dangerous, 600-mile trek from Nenana, Alaska, to remote Nome, Alaska, bearing an antitoxin that was used to fight a diphtheria outbreak. There is even a statue of Balto in New York's Central Park, Holmes told one former employee. The metaphorical connection was obvious. In Holmes's telling, Balto's perseverance mirrored her own. His voyage with the life-changing drug was not so different from her ambition.
Immediately after returning to California, Holmes decided that Balto would hardly leave her side on the quest to save Theranos. Each day, Holmes would wake up with Balto at the nearly empty Los Altos mansion that she was renting about six miles from her company's headquarters. (Theranos covered the house's rent.) Soon after, one of her two drivers, sometimes her two security personnel, and even sometimes one of her two assistants, would pick them up, and set off for work. And for the rest of the day, Balto would stroll through the labs with his owner. Holmes brushed it off when the scientists protested that the dog hair could contaminate samples. But there was another problem with Balto, too. He wasn't potty-trained. Accustomed to the undomesticated life, Balto frequently urinated and defecated at will throughout Theranos headquarters. While Holmes held board meetings, Balto could be found in the corner of the room relieving himself while a frenzied assistant was left to clean up the mess.
A lot of the article is a broad overview of Theranos and Holmes but there's some more good nuggets in there.