JKR chat--Snape the coward or the one left forever?

[suehpfan]

No: HPFGUIDX 92519

Big snip of two posts 
Carol wrote:
 (Besides, it's more interesting to have him (Snape) put two
> and two together and try to prevent both Sirius and Harry from going
> to the MoM. If he'd known all about the MoM plot, it would have
> spoiled the story.)
> 
> Carol

Unless of course, Snape was supposed to make sure Harry and Co. got 
there (to the MoM) and that Malfoy had time to get the orb from Harry 
before the Order folks showed up.  As far as Sirius is concerned LV 
and Malfoy had reasons for wanting to keep Sirius alive and in 
Grimauld Place.  As we have discussed on this list, there is no way 
of knowing what will happen to Kreacher now and he has proved useful 
to Malfoy and LV already.  Imagine what he might have been able to do 
if Sirius had lived and his treachery not discovered.

Just my "Snape could be a very bad boy" comment for the night.
Sue