own terms. Riley leaves early in the season after realizing that Buffy does not love him and joins a military demon-hunting operation. Spike, still implanted with the Initiative chip, realizes he is in love with Buffy and increasingly helps the Scoobies in their fight. Buffy's mother Joyce dies of a brain aneurysm, while at the end of the season, Xander proposes to Anya. Glory finally discovers that Dawn is the key and kidnaps her, using Dawn's blood to open a portal to the Hell dimension. To save Dawn, Buffy sacrifices her own life by diving into the portal and thus closing it with her death. At the beginning of season six, Buffy has been dead for 147 days, but Buffy's friends resurrect her through a powerful spell, believing they have rescued her from a Hell dimension. Buffy returns in a deep depression, explaining (several episodes later) that she had been in heaven and is devastated to be pulled back to earth. Giles returns to England because he has concluded that Buffy has become too reliant on him, while Buffy takes up a fast-food job to support herself and Dawn and develops a secret, mutually abusive sexual relationship with Spike. Dawn suffers from kleptomania and feelings of alienation, Xander leaves Anya at the altar (after which she once again becomes a vengeance demon), and Willow becomes addicted to magic, causing Tara to temporarily leave her. They also begin to deal with the Trio, a group of nerds led by Warren Mears who use their proficiency in technology and magic to attempt to kill Buffy and take over Sunnydale. Warren is shown to be the only competent villain of the group and, after Buffy thwarts his plans multiple times, the Trio breaks apart. Warren becomes unhinged and attacks Buffy with a gun, accidentally killing Tara in the process. This causes Willow to descend into nihilistic darkness and unleash all of her dark magical powers, killing Warren and attempting to kill his friends. Giles returns to face her in battle and infuses her with light magic, tapping into her remaining humanity. This overwhelms Willow with guilt and pain, whereupon she attempts to destroy the world to end everyone's suffering, although it eventually allows Xander to reach through her pain and end her rampage. Late in the season, after losing control and trying to rape Buffy, Spike leaves Sunnydale and travels to see a