DETROIT -- Christine Beatty's Attorney Mayer Morganroth said his client would testify against her former boss and lover, Mayor Kwame Kilpatrick, in a perjury case, if she was given immunity.

“If they want her, all they have to do is go and get an order of immunity and then she has to testify,” Morganroth said. “It’s very easy, just give her immunity and she’ll testify.”

Morganroth said this was not the first time he has brought the possibility up. He said months ago he heard the prosecutors go through the media, telling Beatty she should come forward.

“And my response to that was why do they have to contact the media to tell Christine that she should come in,” he said. “I said that months ago and half a dozen times to the media every time they raised it,” Morganroth told WJR Radio station.

Morganroth added that he will not push the issue, unless he's confronted with it.

Kilpatrick and Beatty were arraigned Thursday morning and pleaded not guilty on a total 12 counts of perjury, obstruction of justice and conspiracy. The charges stem from testimony they gave in a 2007 whistle-blower trial.

Both Kilpatrick and Beatty denied under oath during the trial that they had a romantic relationship in 2002 and 2003, a key point in a trial involving a former deputy police chief who claimed he was illegally fired.

But excerpts of sexually explicit text messages recovered from Beatty's city-issued pager and made public contradicted their testimony. Wayne County Prosecutor Kym Worthy charged Kilpatrick and Beatty less than two months later.

Kilpatrick and Beatty were longtime friends before they began working together. They were apparently friends while at Cass Tec High School in the 1980s. Then Beatty was asked to run Kilpatrick's bid for state representative. They allegedly began an extramarital affair in 2002 and Beatty left her husband in April 2003.

The pair waived their preliminary examination on the perjury charges last week in district court, which was scheduled for Sept. 22.

Morganroth said he was only speaking as his personal experience as a lawyer, but said he was “shocked and astonished” by what was happening with the case.