I was up in my 9 year olds daughters school yesterday,when her friends mum approached me,and told me that my daughter knows how a man and woman have sex,because my daughter picked up on the conversation with her friends on the street.so she had to give her daughter a book on puberty,i cant stop my daughter having these chats with her friends,as all kids are curious at this age.i understand this woman trying to keep her daughters innocence ,and ive told my daughter not to be telling everything she hears on the street to her best friend,and if she needed to know anything ,she could come to me.i feel this woman has told everyone up in the school about this as she was a bit snotty to me about.so my question is ,is my daughter to young to know part of these things or is the other mother over reacting.