Amanda's History
Counselling
Amanda was a member of the swing choir at the newly rebuilt Sunnydale High in 2002. Buffy Summers talked to her twice as part of her job as guidance counselor at Sunnydale High. During her first visit, sent by Mr. Miller, she told Buffy that another student was bullying her. Buffy told Amanda that she should stick up for herself, which was what she did when she jumped her bully in the car parking lot and slammed his face into the pavement — the reason she was sent to her.
During her second visit, she told Buffy that she thought she was weird because she liked the person that bullied her. Buffy then felt uneasy as she correlated this to herself with her previous violent relationship with Spike.
Discovering her Potential
One night, Amanda stayed at school to repair her Swing Choir sweater, and had an encounter with a strange creature — a vampire —, that attacked her. Amanda managed to subdue and contain him in one of the classrooms, then went to her counselor's house to seek help. Meanwhile, Buffy received word that there was a Potential Slayer living in town, so Willow performed a Potential Slayer tracking spell. It released a light signature to track down the Potential, which happened at the same time Amanda was going to the house.
However, Dawn, who was standing by the door, had the signature going through her to Amanda, leading everyone to believe that Dawn was a Potential Slayer. With mixed feelings about this discovery, Dawn sneaked out of her room to take a walk, when she ran into Amanda. Sustaining a cut on her forehead, Amanda told Dawn about the strange encounter at school. Dawn told her she could handle it, and the two went to take care of the situation.
Once they found the vampire, they ran and hid in another classroom, but were attacked by the Harbingers of Death. During the fight, Dawn realized that the Bringers were trying to kill Amanda, which meant that she was the Potential Slayer after all. Dawn rescued Amanda from the bringers, before letting Amanda take the lead and fight their attackers herself. She armed Amanda with a broken flag pole and told her about her fate as a Potential Slayer. Amanda fought off the bringers before instinctively killing the vampire. The rest of the Scooby Gang arrived just in time to help them kill the rest of the bringers.
Working with the Scoobies
Amanda then joined the growing number of Potential Slayers that received training and become and ally to the Scooby Gang. She assisted Willow Rosenberg, Kennedy, and Dawn in attempting to gain first-hand information from the First Evil by listening via a wiring connected to Andrew, which ended up in Amanda screaming in terror after the First appeared as a mangled Jonathan after he discovered their plot, while originally planning to have Andrew shoot Amanda and all the other Potentials. Amanda was also shocked to see that her fellow Potential, Chloe, committed suicide, having formed a friendship with her. Amanda eventually moved into the Summers residence along with the rest of the Potentials.
Amanda was one of the Potentials to participate in the battle at the vineyard. In the battle, some fellow Potentials died like Dianne and Molly, others like Rona got greatly injured though Amanda remained relatively fine. After all the Potentials kicked Buffy out and chose Faith as their leader, Amanda followed her into an ambush. She survived the battle with three Turok-Hans, and when Buffy was accepted back as the leader, Amanda openly expressed a belief that God had punished them by trusting Faith's judgment over Buffy's, and the other Potentials agreed with that, despite Buffy defending Faith.
Slayerhood and death
Along with the remaining Potential Slayers, Amanda was activated as a Slayer shortly before the battle of the Hellmouth, where she equipped herself with a wooden spear. Despite fighting fiercely, Amanda ultimately died when her neck was snapped by a Turok-Han, while a wounded Buffy witnesses the death. She was 17 years old.