the unbreakable vow, Snape (as everything seems to come back to him)

[Cat]

No: HPFGUIDX 135209

Dragonetti:

Remember the last term of the Unbreakable Vow, should
Draco seems to fail, will you complete the mission.
Well Draco certainly seemed to fail the mission,
therefore Snape had to kill Draco. 

Concerning the hate that materialized in his face,
remember we are seeing the scene from the point of
view of Harry who might be biased to the point of
misreading what Snape's expression was. And if he was
right, the hate can be not towards DD but towards
himself or Narcissa for the Vow.

 
Now Catalyna:
 
I'm sure if he has to kill Draco if he fails, Narcissa would not have made the UV.  If he did not complete the mission after Draco failed, Snape would have been killed.
 
As for the hate and loathing on Snape's face; could it be he finally found out what Draco's mission was and the hate and loathing were actually for Draco? I believe Snape tried to find out what the mission was, but didn't know for certain until he was face to face with Dumbledore.
 
A line caught my ear rewatching COS last night. I know I'm misquoting "but Fawkes is loyal to those who are loyal to me."  Perhaps this will be able to show that Snape is loyal still no matter what Harry  believes.  But, this may not play and we find Snape is the villian...  
 
I think this debate is going to go on even after the last word in Book 7 is read.... two more years....groan.


Cat

Life's like a movie. Write your own ending. Keep believing, keep pretending.--Kermit the Frog