Behavioural

Hi I was wondering whether anyone has experienced the same issues or Similar that I am going through with my 8yr old daughter who has asd she is going through very early stages of puberty. She says inappropriate words in public and at school which includes body parts and also today I have been asked to speak to the school as when she was completing work with a partner they went behind a screen when the teacher went to check on them she had  her tights and underwear down and showing the other child her body!! I'm really concerned I don't know what to do other then keep going through how her body is private and should not be shown to others! I don't know whether this is common behavior for children with Asd or is she going through a  stage that nuro  children go through but at a younger age..any advice will be much appreciated thank you