If it flies long enough to get them home, then it's fine. Not as though Ple Two has any real reason to care, but she's decided to work with everyone to fit in, and if she's working on it then it isn't allowed to fail.

That's a strangely loaded question, though. "...I do. At least, that's where I would expect to live if I ever... go back." If she isn't still a soldier; if she isn't sent down to Earth and back up for that purpose for the rest of her life.