The lawyer Lisa Bloom resigned on Saturday as an adviser to Harvey Weinstein, the high-powered film producer facing allegations of rampant sexual harassment, amid harsh criticism of her handling of his defense.

Among those upset with her were two members of the board of Mr. Weinstein’s company: his brother, Bob Weinstein, and Lance Maerov, who had both exchanged confrontational emails with Ms. Bloom over the past two days.

In making her announcement on Twitter, Ms. Bloom did not offer an explanation for her resignation. The tactics and tenor of her defense of Mr. Weinstein have varied, and there were often substantial differences in her public and private statements. The emails, viewed by The New York Times, reveal that at least two board members did not approve of her approach.

As the board convened an emergency phone meeting on Thursday evening to address the allegations, published in an investigation by The Times, Ms. Bloom sent an email to board members attacking the article. She outlined a plan that involved “more and different reporting,” including “photos of several of the accusers in very friendly poses with Harvey after his alleged misconduct.”