Caz, that was (or is, if you decide to go on) a great story. I loved that you came back to them in the hotel room, and I think it's a great touch that they kept the memories; it keeps the complicated set of emotions you've been dealing with all along in play without erasing them. It would have been easy to just have them resume where they left off, but of course that's too easy. Your way seems right to me, and it definitely could let you have good sequel angst, too.
I liked Spike misjudging Vamp Willow, by the way, and in general, I thought the various interactions between the purer forms of the characters and their various doppelgangers was well done.
Thanks for a great story, and I will be checking back to see if you decide to go on with this one!
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"Run, flee, maybe skedadlle. We're not here to engage. This is strictly recon." Willow, on season seven, in "This Year's Girl"