You are right. Ive taken her on some routes involving close drop offs, exposure and even some easy scrambling, until one day when she mentioned that she had been scared to death on a section near Taylor Gill Force in the Lakes, on the way to Seathwaite from Great Gable.
Although I was 'fielding' her across this section, I realised that if she had slipped, there would be no way that I could have held on to her. That was the last time, a wake up call and wouldn't even dream of leading her on anything the like, since.
Dave.