“It's a dangerous business, Frodo, going out your door. You step onto the road, and if you don't keep your feet, there's no knowing where you might be swept off to.”
-- J.R.R. Tolkien, The Lord of the Rings
As if being alone on a spaceship isn't enough... there are voices, smells, doors opening, things missing.
Poor Gillian thinks she's going crazy and I'm not sure she's wrong.