Dorothy "Dee" Horky

Dorothy "Dee" Horky, the former president of the Wheaton North High School booster club, failed to appear in court on Aug. 27. (DuPage County State's Attorney)

The former president of a Wheaton high school booster club who prosecutors say used the organization as her "personal piggy bank" has pleaded guilty to theft charges.

Dorothy "Dee" Horky, 58, of Carol Stream, admitted guilt Thursday to felony theft over $10,000 in DuPage County criminal court, according to prosecutors.

Authorities say Horky, the former president of the Wheaton North High School booster group, used a club-issued credit card to take just under $11,000 in cash advances over a five-month period in 2012. She then accessed a club bank account to pay back the credit card advances, prosecutors said.

"For five months, Mrs. Horky treated the Wheaton North Booster Club as her own personal piggy bank," State's Attorney Robert Berlin said. "What is particularly disheartening about this case is that the money Mrs. Horky saw fit to take was intended for students' extracurricular activities."

Horky was club president between 2006 and 2011 and allegedly told club officials she destroyed the credit card after her term expired. The organization went to police in November 2012 when officials noticed irregularities. Horky was arrested in March 2013 and has been free on bail since then.

She is due back in court May 29, and a sentencing date could be set then. The theft charge is a Class 2 felony, and possible punishments cover a range of options from probation to jail time.