I do not know how you would know this young girls age. Some kids look older than they really are.

I'm sure that a lot of people will not agree with me, but I think YOU should chill out. This girl was only blocking one tunnel, it is not the end of the world for you or your children. You should be teaching your children tolerance and compassion. I am sure the Burger King play area was a treat for her just as it was for your children, and if shes not hurting anyone, then whats the problem? I would have encouraged my son to play with her.