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Asylumverse Series by Perletwo
Summary: After six years in an asylum, Buffy's going home. An alternate version of Spike is in Buffy's hospital-world. S6, Normal AgainI don't know where it is online. I have a copy but it's not a lot - only through chapter four. I know it was not completed but I don't know how much was posted. It was on The Sandlot which is no more. The last link for it is:
http://www.the-sandlot.com/fic.php?mode=fic&fic_id=569#If anyone knows more or wants to search through the wayback for it the link may help you get there with some work. Hope this helps.