Someone who knows why DD trusted Snape?

[houyhnhnm102]

No: HPFGUIDX 133971

TrekkieGrrrl: 
> I still have this feeling that it was Hagrid that was the witness, if 
we're going for the "Snape and Dumbledore made an Unbreakable Vow" theory. Hagrid is backing Snape up ALL the time almost to the point of being a total echo of Dumbledore's "I trust Severus Snape" 
> So my guess is that Hagrid KNOWS exactely WHY Dumbledore trusts Snape.

houyhnhnm:

I like it.  Snape and Hagrid do have a pretty good relationship.  I can 
find only one scene in all six books (PS/SS) where there is direct 
interaction between the two, but the exchange is remarkable for the 
lack of fear on Hagrid's part and the lack of surliness on the part of 
Snape.