Myself, Atsushi and Yoshi were with her during the Hotel California mission, so the three of us are probably the closest to her...

And personally speaking, I do consider her a really dear friend. Even if sometimes when I hear her voice, I'm reminded of someone back home.

[seiyuu jokes, am I right]

But... as for this particular mission, I don't know. She's technically not 'alone', since she does have the Doppelganger with her, but - I earnestly couldn't tell you why she decided to go off on her own. Maybe it's because this is all too important and she wants to protect us, or maybe it's something else entirely, I'm not sure.

However - what I am sure about is that she has her reasons. And I trust her.