Post Chosen, Time Travel

Ok so I really bad at summarizing, but here it goes. This is a post Chosen fic that has Buffy time traveling to the Victorian era to see William. I think in the fix Spike was dead, dead and not with Angel. I don't remember a lot more, (which is why I'm having trouble finding this story.) But I remember in the end she stays in the past with William. I think maybe Spike's ghost or something visited her and offered her a choice?

Yours William by Puddinhead. It's relatively recent and has a sequel as we speak.

Yes that's it! Thank you.