Dawn didn't try to kill herself. She merely wanted to see if she would bleed as being "the key" she didn't believe she was real.
and Buffy and Joyce fixed her up and had a talk with her about how real she is.
In the first episode of season 5 "Buffy vs. Dracula"
She doesn't necessarily want to die, but she is at first unhappy with her life in season 6. This is after she is brought back to life by willow, because they think she is in a hell dimension, when she was actually in heaven. When willow tries to destroy the world, but it is saved, Dawn sees Buffy crying and assumes that she wanted the world to end. Buffy says that she wants to show Dawn the world, not end it, and is surprised that she would think that. Buffy went through hard times in season 6, and at points thought the real world was hell, but she would never want to leave her sister and friends.
Season 5! because that's when Glory shows up looking for the key which is Dawn and when Buffy dies for the second time
Dawn Summers played by actress Michelle Trachtenberg does not appear until season 5.
Dawn cheats on her college boyfriend by sleeping with his roomate, so the boyfriend who is a demon turns her into a giant, a centaur and a porcelain doll
Dawn.
Dawn is in fact a mystical object known as The Key; a group of monks transformed The Key into human form and sent it to the Slayer for protection from the villainous Glory. The memories of Buffy and her associates were altered, along with relevant records, so that they believed her to have always existed as Buffy's sister.
Dawn is handcuffed in the "Buffy the Vampire Slayer" episode titled "Blood Ties," which is the 15th episode of Season 5. In this episode, Dawn is taken into custody by the police after she steals food to feed a vampire. The episode explores themes of identity and the challenges Dawn faces as the series progresses.
she is the key that unlocks the barriers between dimensions. she was created by monks and sent to Buffy in a form of her sister so she would protect her. they alter buffys life and past to make her think she was there the entire time. before that she was just pure energy.
Yes, Buffy dies twice in Buffy the Vampire Slayer. She dies first in season one when the master drinks from her and she drowns, but Xander manages to bring her back. Then she dies once more in the season five finale when she sacrifices herself for the benefit of the world and for her little sister, the original sacrifice. At the beginning of season six, Willow finds a special way to bring her back again but it has a great price.
I heard that they wanted to make an eighth season but the cast refused to do it. so they made the season into a comic book, which I've read and is pretty cool. Buffy sets up a teams of slayers all over the world and dawn has some seriously weird problems. Anyway, hope that helps.
No, She is the Key that opens to the portal to hell.