Tyna Karageorge filed a defamation lawsuit Friday in Cook County Circuit Court, alleging Urlacher conspired with his attorneys and a newspaper reporter to portray her as "a bad Mother, unfit, and a killer."
Karageorge is representing herself in the lawsuit, claiming she hasn't had custody of her son Kennedy since the Dec. 29, 2016 death of her husband, Ryan Karageorge.
The death was ruled a suicide, according to a Cook County medical examiner.
The Chicago Tribune and reporter David Haugh are also mentioned in the lawsuit as co-conspirators with Urlacher.
"The atrocities that the Defedants (sic) have done equates to a modern day lynching and witchhunt," Karageorge wrote in her lawsuit. "My life has been ruined by what transpired ... People perceive me as a murderer even to this date."
Urlacher's attorneys say the lawsuit is essentially a reiteration of past false statements.