How about a straight answer instead on what's made Miller change her mind. I don't think it was tired of sitting in the joint. You get acclimated to it after a while. She owes the public the truth.
From today's NYT:
New York Times Executive Editor Bill Keller said in a statement: "Judy refused to testify in this case because she gave her professional word that she would keep her interview with her source confidential. In recent days, several important things have changed that convinced Judy that she was released from her obligation."
But Joseph Tate, an attorney for Libby, said yesterday that he told Miller attorney Floyd Abrams a year ago that Libby's waiver was voluntary and that Miller was free to testify. He said last night that he was contacted by Bennett several weeks ago, and was surprised to learn that Miller had not accepted that representation as authorization to speak with prosecutors.
"We told her lawyers it was not coerced," Tate said. "We are surprised to learn we had anything to do with her incarceration." Tate said that he and Bennett then asked Fitzgerald whether their clients could talk without fear of being accused of obstructing the investigation, and were assured that Fitzgerald would not oppose them doing so. After the phone call from Libby on Sept. 19 or 20, Tate said, the lawyers wrote a letter to Fitzgerald indicating Miller accepted Libby's representation that the waiver was voluntary.
In July, when Chief U.S. District Judge Thomas F. Hogan ordered Miller to jail, [Baars emphasis] he told her she was mistaken in her belief that she was defending a free press, stressing that the government source she "alleges she is protecting" had released her from her promise of confidentiality.