buffy works in a office?

Buffy is the daughter of hank all human and then she gets a job at an office, drusilla works there too and she hates buffy and try to make her life as miserable as possible... I remember that spike and her has a relationship and then her father finds out and hell breaks lose.

This probably isn't the right one, but it sounds like Brat's Do Right By Me: http://spikeluver.com/SpuffyRealm/viewstory.php?sid=15162&warning=NC-17

If that's not the one you're looking for, it's still a pretty good read. There's also a short sequel: http://spikeluver.com/SpuffyRealm/viewstory.php?sid=22196

FYI there is also a part 2 - Do right by the Wedding...on this site too!

Yeah, I linked to both of those stories, but I'm still not sure if that's the fiction the poster was referring to.

Thank you. That's the one. Kudos!

Awesome, the reason why I wasn't so sure is because I didn't remember Drusilla being there, but it has been a while since I've read it.