Not guilty.

That’s the legal status of Deidre Warren, the mother of former Delegate Joseph D. Morrissey’s 19-year-old girlfriend, Myrna Pride.

In a stinging rebuke to prosecutors and Henrico County police, Circuit Court Judge Albert Swersky acquitted Ms. Warren of concocting a phony document, using it in court and lying about its validity.

The judge’s ruling in the criminal case backs up a Free Press report earlier this year that the document was valid and could be found in an unrelated lawsuit in Chesterfield County Circuit Court.

Judge Swersky already had thrown out similar charges against Mr. Morrissey, although the prosecution is now asking the state Court of Appeals to reinstate the charges.

The document at the center of the case dates to 2006 and involves a separation agreement between Ms. Warren and Ms. Pride’s father, Coleman Pride.

The document spells out Mr. Pride’s agreement to pay $50 a week into a college fund for Ms. Pride and her sister.

Mr. Morrissey’s defense team introduced the document in court last December when the former state legislator was convicted of contributing to the delinquency of Ms. Pride. Mr. Morrissey ultimately served 90 days behind bars for having a sexual relationship with her when she was 17 and under age. He and Ms. Pride still insist it never happened. They had a child together this spring.

During Ms. Warren’s trial last week, Mr. Pride testified his signature on the document was forged, a claim he previously made to authorities that triggered the forgery charges against Ms. Warren and Mr. Morrissey.

However, Judge Swersky did not find Mr. Pride’s testimony credible, particularly after two experts for the defense testified the document was produced years ago and that Mr. Pride’s signature was a match for those found on unrelated documents he had signed.

Ms. Warren’s attorney, Craig Cooley, sought to show that Mr. Pride made up the forgery claim to protect himself from Ms. Pride’s allegations that her father had failed to fully pay into her college fund as agreed and ultimately emptied it before she could use it.