Angela Mason

Background
Angela was a nice girl whose father was a college professor, She lived with her roommate Lindsey. She was dating Matt Harrson but she walked in on him sleeping with Lindsey. So she went over to Neil's but Matt went to talk to her. So she snuck out and she was driving home, talking with Matt, her car went off the road and crashed, killing her instantly.

Neil brought her back due his crush on Angela. Unfortunately, Angela didn't come back so Angela. She had become twisted. So she killed Matt for cheating on her and tried to kill Lindsey, but was stopped by the Winchesters. When she was brought back, she and Neil got "together" and had been staying in his basement.

After Sam and Dean stopped her, she went to Neil's office at the school and overheard Sam and Dean's "plan" to kill her. Neil asks her why she is out of the house and she avoids the questions and asks him to stop the boys from killing her. When she realizes Neil isn't going to help her, but betray her, she snaps Neil's neck. Then she heads to the cemetery where they lure her to her to grave. Sam and Dean manage to get Angela back into her grave and stake her into. During the struggle with her, Sam broke his hand.