My 7 year old daughter has been acting worryingly. She has been kissing her 9 yr old brother in bed. When asked why they were doing it they said they had seen it on tv at thier dads the conversation led on to how they sleep in the same bed there also despite having seperate beds then i asked if anyone ever touched her private parts she said they pinched her and it felt like an injection and hurt when i asked who she said no one because its wrong and would get in to trouble. Now i am confused and dont kniw what to do please help. She wont say anything else just clams up.