COS Burning Question

[Hagrid]

No: HPFGUIDX 78124

--- "bohcoo" <sydenmill> wrote:
> How did Professor McGonagall know it was Ginny who had been taken 
> into the Chamber? 
> No one saw it happen or they would have known where the entrance to 
> the Chamber was.  
> No head count was done, or Ron and Harry would have seemed 
> to be missing too as they were hiding in the teacher's cloak room.
> This is driving me crazy. . . If this has been answered before, 
> please clue me in.
> Thanks!
> Bohcoo

McGonagall is the head of Gryffindor House, and able to talk to the 
girls in their dorms. If Ginny was acting weird after stealing back 
Tom's diary, her roommates would have alerted the Professor. 

McGonagall may have heard she was heading for that area when the new 
message was found.

I am completely and utterly 20% sure of this ... lol