Sorry...I was referring to stats for sexual assaults as this was in reference to the assualt on the NW flight. Put the lack of clarity down to a lack of sleep on my part!
I suppose at the end of the day, you need to do what you think is in the child's best interests. Whilst some at age 10 are quite mature, others aren't, and if unaccompanied, they probably need you to act as their advocate in situations where their safety is a concern. Rule of thumb should be to treat them as you would like your own child/niece/whatever to be treated...I'm not advocating that people should be moved or whatever. I agree that paranoia sometimes results in extreme measures being taken without little justification. But I would be surprised if that's the only thing that could be done.