The St. Louis Post-Dispatch reported that Cristal Taylor admitted in court on Monday that she failed to check in with her probation officer in a 12-year-old forgery and theft case. She also acknowledged being arrested twice in Texas in 2000 for misdemeanors.
The 38-year-old St. Louis-area native has said she planned to marry Nowitzki and was pregnant with his child. A Texas judge last month ordered Taylor to undergo a paternity test to determine the father, and Nowitzki is seeking sole custody of the child.
Taylor was arrested on May 6 at Nowitzki's home in Dallas on a 2006 theft of services charge in Jefferson County involving dental work.
She pleaded guilty in 1999 in Missouri to two counts of forgery and two counts of felony stealing and was placed on probation.
St. Charles County Circuit Judge Nancy Schneider on Monday ordered her to serve a concurrent five-year prison sentence for three felonies and a misdemeanor, the clerk's office said.
Taylor was given credit for one year of probation, which means she will serve four years. Her attorney told the Post-Dispatch that she also will receive credit for more than 100 days she spent in jail waiting for trial in her current case.
Taylor's attorney, Matthew Fry, declined to comment about the case to The Associated Press.