Rachel was back in her prison uniform as she would soon act in court. Her status did change. She was still guilty because of negligence. However, the cause of mass death was already known to the investigators, prosecutors, lawyers, or perhaps the panel of judges themselves.
Emma also arranged the entire scenario from the beginning until the press conference. Journalists have thronged the courthouse, willing to wait for hours because this is the most awaited news.
The ranks of supporters, families of victims, and opponents of Cyclops Intelligence also came. Supporters voiced the results of their objective investigation. When they concluded Rachel and CI were innocent, they came to support her. They are right extremist scientists who sometimes don't care about ethics and humanity, including the feelings of the victims' families. But right now, they benefited Rachel and Emma.