One of my colleagues has mentioned that she's worried about her 6 yr old DD behaviour. She sits on her stepdad's tummy and rubs herself and she has asked to see his willy on more than one occasion. My colleague is at her wit's end as it's causing arguments between her and her DP. What books can you recommend that could explain what's going on to the DD? I've tried to reassure my friend that her DD is normal, but I think she would appreciate any advice and a way out of the situation