We have a private forum for discussions, but nothing public.
I'm not sure that kids that age should be in ANY forum or social networking site to be honest. IMO it's just not appropriate. We have a few young people in KH, but have had problems with them from time to time. If they are already on Ravelry there isn't much we can do and it's really up to the parents in these situations.
I also don't like the way she worded that message to you. I know what she means, but it comes across as somewhat intolerant..or something. Not sure how to say what I'm thinking..