You're a defense attorney. A lady walks into your office and tells you she is an eyewitness in a "serious" case. She has given a detailed, video-recorded statement to the police. She has been threatened by friends of the defendants, but now is living anonymously in a different neighborhood. In the preliminary hearing of the case, she tells you she began testifying differently than her police statement. When the prosecutor had her declared a hostile witness and confronted her with her prior statements, she claimed that the material parts of the statements were not true or denied making the statements. The judge has adjourned the preliminary hearing in order to allow her to obtain legal advice about her testimony, after admonishing her that she was putting herself in possible jeopardy of perjury.
The "serious" case re-convenes in a week. Assume the prosecutor will tell you he is in fact prepared to charge her with perjury or at least obstruction if she continues to claim she did not make statements which he has on video. The evidence in the case indicates this witness is in no way implicated in the "serious" event.
What is your advice to her?