Canon evidence for Snape being a vampire

[pippin_999]

No: HPFGUIDX 35368

--- In HPforGrownups at y..., "anavenc" <vencloviene at h...> wrote:
> Impressive list, Pippin.

Thanks!

>.  Meanwhile Snape, a 
> vampire, and therefore considered evil by cultural default, 
chose a 
> right path and ended up not only being a character milllions of 
fans 
> are crazy about, but also able to see his reflection in a mirror 
(GoF) 


Gosh darnnit, I knew I was forgetting something important. 

GoF -35
"Snape followed [Dumbledore], looking into the Foe-Glass 
where his own face was still visible, staring into the room."

Snape enters the room behind Dumbledore, McGonagall goes 
straight to Harry, but Dumbledore kicks the stunned 
Crouch/Moody over onto his back. Snape is right behind him, 
presumably as back up, but his attention is drawn to the 
Foe-Glass, obviously not an ordinary mirror. Snape's fascinated 
by it because ---he's never seen his reflection before?

Pippin
who thinks that JKR is being very mysterious about vampires. If 
not Snape, what is she hiding?