Tonks and Luna

[S Handel]

No: HPFGUIDX 76128

Ok all you OOP experts.  I have been pondering this all day.  
Dumbledore told Harry at the end of the book that he had been 
watching him much closer than he could imagine.  Now, I wonder, since 
Tonks is a metamorphmagis, is it possible that she is Luna?  I do not 
recall them ever being in the same room together at the MOM.  Tonks 
has the type of personality to pull off Luna.  And Luna has been at 
the school since Ginny has been so she could have been watching Harry 
from afar.  Isn't it strange that when Harry needs closer watching 
Luna becomes a major character?  Both girls are a little "out there".
Just wondering how DD has been keeping such a close watch on Potter 
and the true purpose for Tonks to be a metamorphmagis.
Susan