Well that "someone" was pretty much trying to not visibly panick and doing rather badly. In hear head, she was mentally berating herself. How, how had she let herself get so complacent? How had she let her guard down so much she didn't even notice that he was there until he was less than fifty yards away?

And of course her outburst had attracted his attention, and the only thing keeping her from bolting outright is Sora grabbing her shoulders. She knows that this is Hinoto-Ri. She knows that maybe this Saix isn't like the one she knows (he may not even remember her).

But she isn't really willing to take that risk.

"I-it's Saix," she squeaked, trying to tilt her head in the vain hopes of hiding her face, "We have to go."