Sitton was also a paid fundraiser for Perdue's 2008 campaign. She was charged with accepting $32,000 in unreported salary payments from illegal campaign donations.
The plea deal she agreed to Friday lowered the charge from the felony campaign violation she originally faced.
Sitton was given a 45-day suspended sentence in lieu of 12 months of unsupervised probation. She must pay a $5,000 fine within 30 days. She is also not allowed to work for any candidate, campaign, or party for one year. She also can't solicit funds for any candidate, campaign or party for the same period.
Sitton was one of several Perdue associates charged in relation to the governor's 2008 campaign.
Perdue family friend Trawick H. "Buzzy" Stubbs Jr. of New Bern faces felony charges for providing more than $28,000 in undisclosed flights on private planes to Perdue as she ran for governor. Stubbs, who was the law partner of the governor's deceased first husband, had already provided Perdue's campaign with the maximum $4,000 contribution allowed under state law.
Stubbs' defense is appealing the venue for his case. He's charged in Wake County.
A former top fundraiser - Peter Anthony Reichard of Greensboro - was indicted on a felony count of obstruction of justice. He entered an Alford plea in May.
An Alford plea means he did not admit guilt, but acknowledged the evidence against him could lead to a guilty verdict.
Reichard wass accused of funneling the $32,000 in under-the-table payments from a wealthy Perdue donor through a private company he controlled to Sitton. Reichard was Perdue's campaign finance director in 2007-08, at the time the illegal payments were made.