GRAND RAPIDS, MI - The former Campus Elementary lunchroom aide who allegedly paid $1 to have a fourth-grader "roughed up" by fellow classmates has been charged with two misdemeanors, said Grand Rapids Police Lt. Patrick Merrill.

Merrill said Brooke Wilson-Johnson, 18, of Grand Rapids, who was fired, is charged with disorderly conduct and aiding and abetting delinquency, after an investigation into the Oct. 7 incident. He said the city attorney issued the warrants on Oct. 21.

But Wilson-Johnson, who allegedly attempted to pay students to beat up the child in retaliation for his behavior that included calling her a "pregnant b----," denied to detectives that she tried to have the 9-year-old beaten up, according to a police report.

Related: Threatened Grand Rapids student: 'That lunch lady is giving kids a dollar to beat me up'

Related: Worker fired after offering GRPS students $1 to beat up 4th-grader

"The suspect said she never offered any money to the kids to beat up the victim," according to Detective Mason Klein, in a report based on a phone conversation with Wilson-Johnson. "She said the principal's statement is a lie. She said she is not a bad person."

In documents, Principal Bernard Colton said when he asked her what happened, she said she was "playing." She allegedly admitted the threat to the principal and told him the boy had sworn at her -- a claim backed up by other employees, records show.

Wilson-Johnson was observed giving one student $1 by a resource teacher, Renee Lance, in the cafeteria.

According to the report, Wilson-Johnson said she was going to buy a boy a bag of chips for standing up to the 9-year-old who swore at her, but ended up giving him a dollar instead. She said the boy to whom she gave the dollar never beat up his classmate.

But the victim said he was pushed, bumped, thrown out of seat, and had his food taken, according to Grand Rapids Schools public safety office records obtained by The Grand Rapids Press/MLive under the Freedom of Information Act.

He ran to Lance and said: "Mrs. Lance, you gotta help me! That lunch lady is giving kids a dollar to beat me up," Lance wrote in her statement. He also told Colton when he entered the cafeteria.

According to Merrill, three students, instead of two, were involved - two 9-year-old boys and a girl, age 10.

The students said Wilson-Johnson gave each of them dollar, according to Klein's report.

A contracted employee through West Michigan Janitorial Service, Wilson-Johnson began working at Campus this year, and had passed a background check, officials said.

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Monica Scott is the Grand Rapids K-12 education writer. Email her at mscott2@mlive.com and follow her on Twitter @MScottGR or Facebook