Already a lot of people said that. And if I'm not wrong, it's even in the wiki.
yes it was there:http://yumenikki.wikia.com/wiki/The_Spaceship
>A note to all the impatient people out there, DO NOT have Madotsuki sit down while waiting for the space ship to crash, or else she will be stuck and unable to stand up, pinch herself awake, or use the menu. It's up for debate over if she died in the crash, because her head is slightly lower than it is when she normally sits.
I'm not so sure about the theory, but if she dies in the crash and is still there, perhaps it could support the idea that she kills herself to stay in her dream forever?