Spuffy time travel fic where Ethan Rayne sends Buffy to the 1800's

I need help finding a fic where Buffy is in the school library and picks something up that Ethan Rayne had planted for Giles, which sends Buffy to pre-Spike before he was vamped by Drusilla. I remember she killed Angel who disappeared from the present and no one remembered him and kept William from being turned making him also disappear from the future. I believe she was only gone for three days in the present, but years had passed in the past where she had married and had kids with William. I think her life in the future disappeared too because I remember they called Joyce and it was another person's number, although Willow, Xan and Giles still remembered her. I hope someone remember it, because I really want to read it again. Thanks

Ah, that is Another Time, Another Place by proterjerinnocencia.

ScoobyDawn
Yes, that's it!!! Thanks a bunch, because I wasn't looking for it on FF at all, preferring to get my Spuffy fix on other sites for the last two years.

I recently read through a mass of FF fics. I have a whole list of sites to search through and that is one of the very few I've trawled through once already.

Always glad to help people get their Spuffy fix.