Robin Williams' daughter, Zelda Williams, has returned to social media following a highly public departure that served to draw a spotlight on cyberbullying, reports Newsday contributor Frank Lovece. "Thank you," she posted on Twitter, linking to a Harvey Fierstein quote on her Tumblr page: "Never be bullied into silence. Never allow yourself to be made a victim. Accept no one's definition of your life; define yourself." The actress, 25, had removed herself from social media on Aug. 12 following a slew of repulsive comments in the wake of her father's Aug. 11 suicide.