Buffy falls into AU where Spike runs Sunnydale

Hi all,
I searching for a fiction where Buffy falls into an alternative universe. In this realm, Spike is the Master of Sunnydale which is overrun by vampires & demons. There is a scene where he brings Buffy w/ him to the Bronze and she acts as his thrall/slave. (I think she might even be in a collar & leash kneeling besides him on this throne in the Bronze.) Demons get antsy & grabby and she punches or dusts one. Spike & Buffy leave in a rush worried that the demons saw through the act, but they took it as her protecting her master.

Does anyone recognize this story?

Could it be "Master" by Aurora? It's here on The Spuffy Realm and unfinished

I'm not sure but I think I remember a scene like this in this fic. Angelus is in charge but Spike gets Buffy. It's a really good story though.

Rebellion by Thianna

http://spikeluver.com/SpuffyRealm/viewstory.php?sid=15344&warning=NC-17

Summary: *COMPLETE* AU - Buffy just moved to Sunnydale with her mother to attend college. She knows nothing of demons or vampires until she meets Angelus. Angelus is Master of the Aurelius coven in Sunnydale and has decided to keep Buffy as his new plaything. Spike's bored and wants to leave Sunnyhell but his decision has some consequences.

Ah yes, Master by Aurora is the story with the scene. Thank you so much.
Just a note on my memory: It's not that Buffy falls into another universe. It's a different reality to canon altogether. Buffy is just a regular human who is on a roadtrip and gets taken one night in her stop-over in Sunnydale to be kept by Spike.

Spuffygirl
Thanks for your suggestion of Rebellion. Although not the story I had read, it sounds good and I will be reading it. Nice banner for it also.