She quit, she wasn't fired. And it was at least partly over incidents she wasn't even party too. Apparently she was upset that a supervisor suggested she not rap.
The Rolling Stone article is inaccurate. NYT article is better. Clean your mind of Rolling Stone.
Shaw quit because of a hostile work environment prompted specifically by her protest, which your linked article elides. Regarding the rap, she was told specifically she could not do it because she is white, and not because of any other reason.
https://www.rollingstone.com/culture/culture-news/jodi-shaw-...