The lights flicker. Go out briefly, sputter back to life, then fail entirely. You sigh and pay them no mind.
Your study of Eiffel's discoveries is interrupted periodically by almost comically loud and ominous creaks and groans from the hull of the Hephaestus. With a roll of your eyes, you keep working.
Something hisses from the air vents. The first few days, this would have made you panic for fear that you were being gassed, to sleep or to death. Now you barely glance away from the panorama of space before you.
When the in-rushing air cuts off, it sounds almost sullen.
You can't remember the last time you got a good night's sleep. Bored with simply waking you at any old time of night, it seems, Hera has developed the uncanny ability to sound alarms, flash the lights, or blast choice selections of Eiffel's most annoying and loud music through the speakers right as you are falling asleep. If you manage to actually get to sleep anyway, she repeats these tactics when you are deepest asleep, ensuring that you are so startled and disoriented that you flail around in bed and she can get in a good long laugh at you.
You're pretty sure she must be monitoring your vital signs to do this with such unflinching accuracy, and wonder what other torments she might devise with such information.
It comes to a head. Hera pulls out all the stops, treating you to a cacophony of hissing "gas," creaking hull, temperature drops, ear-splitting music, and, you suspect, a reduction of breathable air in the observation deck but you refuse to give her the satisfaction of a conscious reaction. Stoically you sit and stare out the window, refusing to shiver, refusing to cover your ears, to close your eyes, to even look around - until, all at once, it stops as the Commander enters to badger you once more.
Ears ringing slightly, and despite rising irritation at Minkowski's inane and repetitious questioning, you feel a slight surge of triumph and turn from the window at last. "Ha! Finally discovered you can't break me so easily, you foolish, petty little -"
You see her standing in the doorway.
"Oh."
Numbly, you consider that maybe Hera's tactics were more effective than you gave her credit for.