But Why does it Have to be Lupin? (was:Kreacher, Buckbeak ...)

[pippin_999]

No: HPFGUIDX 97667

Erin:
>> If Narcissa had insisted that Kreacher work with half-bloods 
and  werewolves, then Narcissa would have lost Kreacher's 
respect just the  way Sirius did, and Kreacher would no longer 
have felt obligated to obey her.  

 It follows that she must not have done that. <<

Pippin:
 Kreacher doesn't have to take *orders* from ESE!Lupin. The 
orders come from Narcissa. ESE!Lupin is just the messenger. 

Erin:
>> Or as Annemehr pointed out, Narcissa could have used a 
protean charm  to contact Kreacher and we could be arguing 
pointlessly (except for the fun factor). <<

Pippin:
Well, she could, if she trusted Kreacher. But would she? A 
half-mad House Elf who betrays his lawful master, a master 
known to be a friend of Albus Dumbledore? What if it's all a trick? 
Better let Kreacher know that there's someone  keeping an eye 
on him, eh? No need to tell him who,  but when the time comes, 
he'll get a signal from somebody in the house. Could it be a 
Weasley? Sure! But you'll have to explain why a Weasley would 
work with a Malfoy <veg>.

Pippin