FORTUNATELY FOR REY the roommate she lives with is a robot who doesn't sleep anyway, plus she's also been experiencing ongoing insomnia issues. It's just that now it's going to eventually evolve into full on neurosis.

That said Rey can keep going for longer than a normal person, being superhuman and synthetic herself, but even she has her limits. So towards the last stretch she'll be dealing with the psychological and physiological effects of sleep deprivation.

Just don't take any public naps and she won't be kicking you like a soccer ball. :)