After meeting Giana Watson and Aurora Richardson, and after Giana had visited her several times, she had always believed that Giana might be her biological mother, and Nancy Scott was her foster mother.
However, she had never doubted her father; she firmly believed that her father was Randy Ziel!
It must have been a mistake, the hospital must have mixed up her blood with Aurora's, she repeatedly convinced herself, and firmly believed that the hospital had made a mistake.
When she took a taxi home, she was surprised to find that her father, Randy Ziel, was not there. He must have gone out to look for evidence or something, right?
Ever since Randy Ziel learned that he was regarded as the main culprit behind the car accident, his recent thoughts had been focused on reminiscing about his wife, Nancy Scott, and on finding evidence that he had been hit by the container truck instead of crashing into it.