Season 5 Episode 21
Episode aired may 15, 2001
when buffy lapses into a catatonic state, willow uses magic to find out why; a tug-of-war erupts between glory and ben over dawn's ultimate fate.
this is the first time that buffy's 'death wish' is seen. what buffy tells willow in her dream about realizing that glory will win is highly reminiscent of what spike has previously told buffy about all slayers having a death wish.