Robin Williams' daughter Zelda returns to Twitter with inspiring message

SAN FRANCISCO -- Robin Williams' daughter has returned to Twitter with an inspiring message, after she was taunted online about his death.

Zelda Williams quit Twitter and Instagram three weeks ago after some users called her names and sent her altered photos of her father.

Robin Williams committed suicide last month at his home in Tiburon.

On Twitter, the 25-year-old wrote "Thank You" with a link to her Tumblr page that features an important note on bullying.

It reads: "Never be bullied into silence. Never allow yourself to be made a victim. Accept no ones definition of your life; define yourself."

The quote is from actor Harvey Fierstein, Williams' co-star in "Mrs. Doubtfire."