Foe Glass' "owner" canon?

[potioncat]

No: HPFGUIDX 158879



>Eddie: 
> My follow-up question: since Snape sees himself in the Foe Glass, does
> that mean he is his own enemy?  (Certainly consistent with the Snape I
> know.)

Potioncat:
Two points.
Strictly speaking, it's Harry who sees Snape in the Foe Glass.  Snape 
only looks at it once. The Snape in the glass is mentioned several 
times. (from memory)
 
Harry sees DD, Snape and McGongall. I don't think (but am not sure) 
that Snape ever appears alone in the glass. The three images in the 
glass are not mirroring the actions of the three professors.

I don't think it indicates that Snape is his own enemy, and I'm taking 
it to mean that everyone would see the same thing if they looked at the 
same time. For that moment at least, Snape, McGonagall and DD were 
Crouch's enemies.