Elizabeth Holmes grilled about ex-partner and her knowledge of Theranos’s flaws

The assistant US attorney also questioned Holmes on the nature of her romantic relationship to business partner Sunny Balwani

Theranos founder Elizabeth Holmes wept in court on Tuesday as a federal prosecutor grilled her over the nature of her relationship with Sunny Balwani, her former business and romantic partner, and her knowledge of problems at the company.

Holmes, who faces 11 counts of fraud and up to 20 years in prison over charges that she lied about the company's core blood-testing technology, had previously testified that she was emotionally and physically abused by Balwani. In Monday's testimony, she said Balwani closely controlled how she ran the business, who she spent time with, and even what she ate. Balwani, who faces his own fraud trial in 2022, has strongly denied these accusations.