I am a mum of three daughters…one of them is just over 3 years off being a teenager. So when I heard that Michelle Mitchell, who is the sister of a friend from school, wrote a book called ‘What Teenage Girls Don’t Tell their Parents’, I shuddered at the thought that my baby girl, was going to become secretive and not tell me her most inner thoughts and plans, when she hit the teenage years. And then the show ‘Puberty Blues’ started. The ads were very explicit about the issue of teen girls, lying, sex, and basically being a royal ratbag. I was very quick to find myself changing the…