Is That Dumbledore's Idea?

I think that's almost as important as the aspect that she's the only girl. Also regard to Ginny, she's not only the only girl, she's the youngest. Harry doesn't get, he said he's all we have to have a guard question mark. I don't think there's any particular reason for them to go to Kings Cross with a guard except that Moody, who trusts no one and is obsessed with security, probably insisted that they do it. But also, I think it's a lesson that none of the adults in Harry's life really learn is just how traumatic his childhood was for him.