Máiria Cahill is calling for Gerry Adams to step down as leader of Sinn Féin.
It follows comments he posted online last night, conceding that the IRA had taken action against alleged sex offenders in the past, including shooting them.
However he said the organisation was 'singularly ill-equipped' to deal with such matters.
He also repeated his denials of Mairia Cahill's allegations against him over his handling of her claims.
Ms Cahill says Gerry Adams needs to consider his position: "I think his behaviour is beyond reprehensible now and I am calling for him to do the decent thing and step down.
"I think he is repeatedly traumatising me, he is repeatedly traumatising othe victims.
"I was up at 3 o'clock this morning speaking to an abuse victim I have never met before who alleges that a member of Sinn Féin has covered up the abuse also and that person is in bits.
"I cannot continue to do this over and over and over."