I love the story! It's interesting, and well written.

This was amazing!

I had my doubts about the pairing, but the way you wrote it had me at least accepting it, if not cheering for it. As you know, I am not a fan of sappy, soul mate relationships in fan fiction, so I really liked that Buffy was first and foremost "The Slayer" rather than someone’s lover.

All your characterizations were nicely done, and believable. I'm glad you used Lilah in this story. I like her ambiguous character, and I think they should have used her instead of bringing Eve in for season five.

I also enjoyed the plot, and the resolution of the story. The ghost of the loved ones was a nice touch. I like Darla, but I am wondering why Darla instead of Cordelia; not that it matters much; it would work either way.

You need to have a few more commas in your writing. Generally a comma is used before a conjunction, (or, and, but) or at a pause in thought, and to separate items.

I also noticed that you don't use many combined words like Can't, I'm, didn't ect.. this is ok, but you have to be careful in dialogue, and think, 'does this character really talk like this?' Here is an example, that doesn't sound quite right, from your fic:

“I am good. I am glad you survived Wolfram & Hart’s revenge." Buffy would be more likely to say "I'm".

Over-all you did a great job on this story. I was very impressed!