Also, I need one that had Xander as jilted lover to Giles. He leaves SunnyDale and goes to New Orleans and meets up with Spike, Oz and Wes. They go back to Sunnydale disguised. They end up killing Willow and Buffy.
Found! Thank you so much jjjean65 found both for me.
The Second one is Not the Only One by Gypsy Gray: http://www.dymphna.net/ucsl/archive/gypsy.html
The First one is: The Scourge of the New world By Wordsmith: http://wordsmith.populli.net/wordsmith.html