minim calibre pointed me to it, but then I forgot to bookmark it. Hopefully she'll give me the addy again and I can properly recommend it.
In the meantime, go read Graveyard Shift by Steph. It's a fantastic story about Willow and Spike and the summer of Buffy's death. If you are looking at me going, well yes I've read stories like that, you haven't read this. It's also Willow/Spike, but not in a romantic way. That's all I'm saying about that.
I suck with summaries, but Graveyard Shift follows the emotional journey of Willow and Spike, and Giles so well that it fits into the continuity of the show. It's a very logical and emotional progression of the Scoobies devestated by Buffy's death, to coming together to fight without her, how Willow became the one in charge and how she decided to resurrect Buffy. .
So go read it!