Chekov. [The final "v" is elongated, an almost stuttering sound, as she takes in all the things that are wrong about this kid. For one thing, he's definitely a kid. (Such a difference, you know, between 15 and 19.) Then there are all the physical details, his voice, and his aura. This is not Chekov. The face is the same, the hair is the same, but he is not the same person.]
Who are you?! [She would've apologized, but disappointment has sharpened her temper.]