Luna hasn't really considered that possibility, but she's not surprised by it either. In fact it's very familiar logic after the Nonary Game, and if there's one positive thing to be said about the Nonary Game it's that Sigma never let her down even knowing who she really was. The thought makes her smile warmly, despite how odd it may look to Firo. "Yes, it could be that way. You could use me if you wanted, maybe even without my knowing. But...I trust you."

It's a strange thing to say, especially to someone she's only known for a few minutes. But even if needless abandonment weren't against her principles, she wants to believe the best of Firo. And when he's already been kind enough to shown this much concern about her, there's little doubt in Luna's mind that this is the right thing to do.