"Oh." That's...some strategy. Luna's too polite to point out the fact that waiting for trouble isn't much of a survival strategy either, but perhaps he knows that anyway. It's her job to try and ensure that people stay out of trouble as much as they can, though, so with the Cornucopia behind them and the desert ahead the next step right now is clear.

"I think we should go into the desert, then. Unless you want to look for someplace else?" Lingering here for much longer doesn't seem like the best idea, but in Luna's mind it is ultimately Firo's decision if he wants it. She's just a GAULEM.