Just a thought.
There was another case recently where a young girl was having troubles and managed to hook herself up with a guy on line. She told him her troubles, he listened, said all the right things, gained her confidence (groomed her), and then helped her to "run away", but she ran with him and of course it was a predator.
Clearly something was going on at school. You don't skip school at 11 years of age that consistently just for no reason.
I'm very very concerned about where Emily has gotten to. Fingers crossed she's just hiding out, but I don't think so.
MOO