It's one thing for a mother to stick up for her daughter — quite another thing for a mother to retaliate against her daughter's rival by sending sex clients to the rival's mother through a fraudulent Web ad.

Yet that's exactly what one New York mother is accused of doing, following a dispute between her 9-year-old daughter and another girl.

Margery Tannenbaum of Hauppauge on Long Island was charged with aggravated harassment for allegedly posting a classified ad on Craigslist offering sex with men, the Associated Press reports. But whenever someone responded to Tannenbaum's ad by e-mail, she gave out the phone number of the other mother, police said.

Tannenbaum did not answer her door on Friday and her attorney did not respond to telephone calls seeking comment.

The charges echo a high-profile case of a Missouri mother who was convicted last year for her role in a MySpace hoax that led to a 13-year-old committing suicide. In that case, the mother is to be sentenced on May 18 and faces up to three years in prison.

The Associated Press contributed to this report.