Mom, I can't imagine anyone being mean to you. This shook you up, though, I can see that, don't worry! I think maybe this is just a dopey kid having what he thinks is fun - he doesn't know any better. Forget him. You need a cyberhug from all of us. I know we're not given to warm and fuzzies on this board, but sometimes they're needed - along with the reassurance of warm, chocolate chip cookies that you give us.
Here is an Irish blessing on your daughter:
May the blessing of God come upon you, child.
I put you under the protection of Mary and her Son,
under the protection of Bridget and her cloak,
and under the protection of God this night."
Salmon leap from the womb of the white sea you look on; they are calves, they are lambs of good color, in peace without slaughter.