/*Nomvuyo Mzamane*/'s lawsuit claims that Winfrey falsely suggested that Mzamane knew about the alleged abuse by an employee and tried to cover it up.
The suit, filed Friday, seeks more than $250,000 on five defamation and related counts from /*Oprah Winfrey*/ and her production company.
Mzamane formerly worked at a Quaker school in Philadelphia. She says she has returned to the city but cannot find work.
Winfrey's Harpo Productions has not yet responded to a call for comment.