Private prosecutor Gerrie Nel said the family of a young Johannesburg woman, who was allegedly assaulted by Grace Mugabe, had been offered money to settle the case.
He addressed the media at a briefing in Centurion on Thursday.
This followed allegations that the Zimbabwean first lady had beaten Gabriella Engels on the head with an extension cord at a Sandton hotel on Sunday night.
"There are more concerning things and that is that the family has even been approached, via a third party, to accept an amount of money to settle this," Nel said.
Nel said there should not be selective prosecutions adding that Afriforum, the organization he joined since leaving the National Prosecuting Authority, will be monitoring government's response to this matter.
The 20-year-old woman’s mother, Debbie Engels, said that they can sleep easier knowing there is someone on their side.
Meanwhile, former African Union Commission chairperson, Dr Nkosazana Dlamini-Zuma, said that Mrs Mugabe should face “the law”.
Answering questions at her book launch, Dlamini-Zuma said women were capable leaders and the bad behavior of one woman should not be allowed to taint all women.
“Whether one beats another it is wrong and the law must take its course. But women are capable, they cannot be judged on that,” said Dlamini-Zuma.