The 22-year-old was called to the Diary Room for a telling off, after she used the racial slur "nigger" twice in one night. On one occasion, the former lapdancer told her fellow housemates that she used the phrase "easy nigger" as a greeting to a Chelsea footballer in a nightclub.
The incidents and subsequent warning were not aired on the nightly highlights programme or the live feed.
Emily Parr was booted out of the house last month for using the same word in a conversation with Charley and Nicky.
A Channel 4 spokeswoman told the Sunday Mirror: "Charley used the N-word as a black woman to refer to another black person. We judged her use of the term different from Emily's. But Big Brother called her to the Diary Room to remind her that this word could cause offence."