Orange Circuit Judge Marc Lubet Monday said Nowak must complete the remaining six months of her 12-month probation.
Lubet did change Nowak's status to "administrative probation," meaning she doesn't have to check in regularly with her probation officer, the Orlando (Fla.) Sentinel reported Tuesday.
In November, Nowak pleaded guilty to misdemeanor battery and car burglary stemming from a February 2007 confrontation at Orlando International Airport with Colleen Shipman, then a U.S. Air Force captain who was dating Nowak's love interest, former astronaut William Oefelein.
Nowak since has completed an anger management seminar and written Shipman an apology letter.
Shipman, who lives with Oefelein in Alaska and is engaged to him, said in a letter to the court she believed Nowak drove to Orlando to kill her, the Sentinel reported.