She is an adult. She doesn't have to tell people what she does or where she's going. She doesn't even have to appear in court for nearly a week.
This is about as over-dramatic as people crying that Carolina is gonna let Cam walk because they didn't give him an extension after his 3rd of 5 seasons on his rookie deal.
Most attorneys want to go over the facts of the case to prepare a witness to testify and be cross examined. Any prosecutor that has an unprepared witness get on the stand is one incorrect answer away from blowing his case. The fact that the witness can't be located is a valid concern for any attorney.