- Nadira: "Her name was Marianne. She was twenty-three. And she was the best of us."
- Faith: "Not as a slayer. Poor kid never had a killer instinct. The moves were okay technically, but you could tell her heart wasn't in it. She was the kind who takes spiders outside instead of stepping on 'em. One of the few girls I tried to talk out of the life. But she wouldn't hear it. Funny thing is, I don't think she stayed because of the slaying. I think she stayed because of the slayers. She'd lost her parents. Didn't have family. All of a sudden she did. And she could see you needed her as much as she needed you."
- Nadira: "She had a crap little flat. Used to let us stay there. As many as needed it. The girls whose parents tossed them out for being tools of Saran, or whatever. The ones who'd been through hell and needed a place to be where no one would judge them or ask them how they bloody felt. We loved her. And now she's gone."
- — Faith and Nadira after Marianne's death
Marianne was a Slayer who was a member of Faith Lehane's London Squad that continued to operate following the End of Magic. Ultimately she was killed by Drusilla during a surprise ambush by the latter. Nadira attempted to force Angel—who had been making plans to resurrect Rupert Giles—to use the material he had been gathering to bring Marianne back to life, but when Angel refused, claiming that his plan to resurrect Giles was only possible due to Giles's long contact with magic and another factor, Nadira left to try and find another means of resurrection. Although her contact was apparently able to resurrect Marianne, Nadira realized that she had been deceived when 'Marianne' could not remember her last name, the new form merely possessing what memories other Slayers had shared during the preceding ritual while actually being animated by a part of Eyghon the Sleepwalker.
- "Live Through This, Part Three"
- "Daddy Issues, Part Three"
- "Family Reunion, Part Four" (corpse)
- "Death and Consequences, Part One" (corpse)
- "Death and Consequences, Part Two" (zombie form)
- "Death and Consequences, Part Three" (zombie form)
- "Death and Consequences, Part Four" (Only mentioned)