I can't say that I have. That being said, I believe the second option is a more plausible outcome than the first. The main reason being...this wasn't really a choice of Aperture Science. It's not as if we had planned to return here. Rather, I was brought here against my will.

[She sighs.]

I'd much rather get back to the facility, but it seems I am stuck here. Still, I am a scientist after all, wouldn't be a good one if didn't I explore what I have been given here. Research, experimentation, testing, and the like. You know how it is.

[At the mention of other Carolines, GLaDOS' back stiffened. That's...that's right. Mr. Johnson thought that if you looked at another you in the eyes, it could wipe out time. Forwards and back.]

Yes...you're right, of course. Imagine that, though. Meeting a future you.