SAN JOSE, Calif.—One-time entrepreneur Elizabeth Holmes, under questioning by prosecutors, struggled Tuesday to recall key events that led to her facing criminal fraud charges for allegedly fleecing investors and customers of her failed blood-testing startup Theranos. Her cross-examination began the day after she shared painfully vivid memories of alleged abuse by her ex-lover and business partner, Sunny Balwani. In between bouts of hazy recollection, Holmes wept on the witness stand after the federal prosecutor interrogating her asked to read aloud some of the amorous texts that she and Balwani exchanged during a five-year period while they were running Theranos and living together in a stealth romantic relationship. “U are God’s tigress and warrior. You are extraordinary,” Balwani cooed to Holmes in a 2015 documents displayed in court Tuesday. Holmes quickly responded with this text: “Coming from my tiger means the whole universe to me.” While poring over the old texts, …