Alison Smith told BBC News that she will speak to the police tomorrow about allegations she is making about the peer's behaviour.
Tomorrow I will be talking to the police and I think the trial by media, probably it is time for that to finish.
I was told by Baroness Ros Scott that he had to leave because of his unacceptable behaviour, which I had raised with the party several times.
Ms Smith said the decided to "blow the whistle" because the peer had started to become involved again in a training event.
"We were told he was not going to make a comeback, now here he is, turning up all over the place," she added.
Nobody thinks Nick is the kind of guy who would defend a 'boy's club', but that does not necessarily mean he has handled the issue well.
One of the women who made allegations against Lord Rennard told ITV News that Lib Dem leader Nick Clegg shifted his position on the matter.
Questions for the Lib Dems mount, centred on what senior members knew about allegations surrounding former chief exec Lord Rennard and when.