"Why do you want to?" Shepard is speaking half into her cup, "Unless you think you can convince her to just let you go."

Assuming that you want to be let go, really. Obviously he wants to get back to whatever he was doing, but Shepard isn't so sure there's anything out there to get back to. How they got here is anyone's guess, as well as where here is.

Have to be pretty far out there, to not know who Commander Shepard is. And even if it really is some other dimension or something... Hell, what's the point? There's nowhere to escape to.

She takes another, deeper drink. Time for a topic change;

"You know, there's somebody else out here with your name, claiming he's better-looking."