I worry about kids these days sometimes. A 12-year-old should be able to deal with people disagreeing with her, especially when she asked for advice in the first place.
I know! I'm still young (24) and I am definitely not done learning!
I don't think anyone was downright rude.... just concerned for her safety and well being. I think everyone gave pretty sound advice, but I guess it wasn't what she wanted to hear.
I hope for her sake she listens, so there are no more broken bones.