This scene takes place in Castle Oblivion, directly after Larxene's end.
Marluxia's POV
"She's nothing to me."
Naminé spoke softly, "You know that's a lie."
"Perhaps," I admitted. "But there is little I can do. The plan has to proceed."
"With only you?" she asked.
I nodded, "That's the way it's begun to look."
"One person cannot overcome eleven."
"It depends on the one person," I shrugged. "And with the Keyblade wielder on my side…" I stopped. It wasn't as if Naminé hadn't heard this all before. "Don't concern yourself with Axel, I'll see to it he gets his punishment." I turned to look at her face; it was without expression. "You know your role."
I expected the witch to obey. She only stared.
"Well, come on girl!"
Replacement: Yes I am aware that Lexaeus was disposed of right after Larxene and that I had Naminé say "One person cannot take on eleven." With Number V gone, there would've been ten left. She was not aware of his death.