Doesn't Voldemort know about Snape's loyalty?

[potioncat]

No: HPFGUIDX 107410

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> 
> Angie (still wondering):
>  Does this beg the question of why LV didn't try to use Snape to 
get 
> the Stone if Snape was working for LV? 

Potioncat:
By the same token, LV didn't contact any of the former DEs.  He 
could very easily gone to Malfoy Manor and revealed himself.  I 
don't think he trusted any of them at that point. It did give him a 
good opportunity to observe Snape.  And that may be why he 
thinks "one has left me forever."  But Snape did appear to be going 
behind DD's back.

Of course, maybe he was going behind DD's back.  Perhaps with the 
stone he wouldn't have needed DD's support anymore.

Potioncat