Nadira's History
Slayer Organization
Nadira was a part of the Slayer Organization and a member of a Slayer squad based in the Azores. Many of the other Slayers in Nadira's squad, whom she loved like sisters, were slaughtered by Pearl and Nash, two powerful half-demons and members of the Twilight Group. Nadira received substantial injuries but was healed by the witch Willow Rosenberg.
World Without Magic
Senior Slayer Faith Lehane took Nadira under her wing and guidance while also hiding the fact that she was harboring Angel, leader of the Twilight Group, who Nadira wanted to kill for the death of her "sisters". However, unlike most other members of the Slayer Organization, Nadira harbored mixed feelings toward Buffy Summers after the destruction of the Seed of Wonder, believing that Buffy had been punished enough. Nadira's anger at her past prompted her to assume an self-destructive attitude, pushing others away by focusing on her Slayer side, holding on to the pain of her failure as she believed that she has nothing else. During this time, she met Willow again during her quest to reverse the end of magic; Willow comforted her and managed to alleviate much of Nadira's pain and hostility, but she was unable to talk Nadira out of her vendetta with Angel.
When Nadira learned that Faith had been working with Angel, she was disgusted at this apparent betrayal, confronting the two of them about their attempt to resurrect Rupert Giles and demanding that Angel instead resurrect Marianne, one of her Slayers who had recently been killed by Drusilla after she escaped a recent battle with Angel and Faith. Although Angel protested that his method of resurrecting Giles was only possible due to Giles's long contact with magic, Nadira refused to accept this, storming away from Angel and Faith to talk to someone else about the possibility of resurrecting her fellow Slayer, unaware that the person she was meeting was apparently Giles himself.
Though Giles successfully managed to resurrect Marianne by painting mysterious symbols on her body, Nadira soon realized something was wrong when Marianne could not even remember her own last name, and discovered that she had been tricked when she saw that Marianne still retained the vampire bite mark that killed her. While her Slayers fought a legion of zombies, Nadira made her way to the basement to discover the ringleader, Eyghon the Sleepwalker.
Nadira and the others were soon overwhelmed by Eyghon's forces, but Angel and Faith arrived just in time to save them. Though Nadira was still upset with Faith over Angel, she was quickly silenced when Faith scolded her over her reckless actions and endangering the others, and she agreed to work with them to stop Eyghon.
In response, Angel called in Spike for further aid, as their mutual status as vampires with souls rendered them immune to Eyghon's ability to possess the dead or unconscious. They ultimately emerged victorious, with Angel claiming the final fragment of Giles' soul with his Tooth of Ammuk, though the conflict between the two human souls and the demon within drove him into a coma. Though Nadira was ready to take her revenge on Angel right then and there, Faith stopped her and insisted that Angel had earned their forgiveness. Nadira accepted her reasoning, but made it clear that she was still upset with Faith.
When Angel and Faith fought Whistler, Pearl and Nash on a rooftop in Hackney, London, Nadira joined the fight; though she made it clear that she still did not forgive Angel and probably never would, she nonetheless acknowledged that he was not the "true" bad guy. Blinded by her desire for revenge, Nadira attacked Nash only for him to overpower her and burn her severely with his heat vision.Thought dead, a few minutes later she got up and found the strength to plunge a dagger into Nash's back, which Faith helped to drive in the rest of the way, exacting her revenge on her killer. Faith then cradled Nadira in her arms, desperately hoping that Whistler's orb of pure magic could heal her. Giles and Alasdair, however, expressed sincere doubts.
Against all odds, Nadira was confirmed to still be alive, albeit severely wounded. Faith was by her side and encouraged her by saying she had her revenge, only for Nadira to reply that none of it was worth it to begin with. After the battle with Whistler, Faith and Giles tended to her. Both of them noted that while Nadira was alive, she began mutating due to the plague orb.
Return of Magic
Nadira resurfaced months later in the affected district of London now known as "Magic Town". She was now the guardian of a refuge for others, mutated humans like her, victims of discrimination. She helped Angel by locking the fairy criminal Corky Smallwood in a magical bottle, demonstrating that she had obtained a bit of knowledge about magic since the plague ball, certainly enough to be a practicing witch. She had also made peace with Angel, helping him deal with the renegade Amy Madison using her affinity to the sentient magical essence of Magic Town and assessing Winifred Burkle after her return to life due to the rebirth of magic, now sharing her body with Illyria. Later, she allows herself to be kidnapped by Drusilla and brought before Archaeus, in a plan to use the magical essence of Magic Town. Archaeus proposes an alliance to her. However, Nadira explains that she don't control the magic, which is sentient, and was only able to communicate with and guide it, before futily trying to attack him.
