I found this recording and in the first part Vanesssa explains why she didn't go to the police. She explains as though she would have had no reason to think he would do anything wrong but I keep thinking I saw something about the make-up girls telling her before the interview that Rolf Harris had 'wandering hands'. I don't know where I read that or maybe I imagined it. She sounds very concerned about the personal stories she hears in the phone-in but, if I didn't imagine the warnings she received, she would not have been completely unprepared when interviewing him on a bed and surely would have been unwise not to have kept her distance.

http://www.bbc.co.uk/programmes/p021hw66