S7: Prophecy says Buffy has to 'die' in order to beat the first, so Spike turns Buffy into a vampire

Hi guys,
a while ago I read a really great story but I really can't remember the title or the author.
It takes place in season 7. I think Buffy finds a prophecy and figures out that she has to die in order to stop the First, so she asks Spike to turn her.
Before the actual turning happens they have sex again, because Buffy wants one last time as a human.
It would be great if you can help
Aly

Is it this one?

Embracing Darkness by SlayrGrl

http://spikeluver.com/SpuffyRealm/viewstory.php?sid=34781&warning=NC-17

Summary: There is one thing that Buffy Summers has feared since she became the slayer. It is her worst nightmare, and now she must face it. After rejecting the Shadowmen's offer to make her more powerful Buffy realizes that she isn't strong enough to win in the fight against the First. Now there is only one option left to give her the strength she needs. To win Buffy must die, but can Spike bring himself to damn her?

Yes! That's it! Thanks a lot

You're welcome.