Do MREs last 200 years?
Mary! Stop eating those things right now!
Forget MREs, where the hell did Mary get Strawberries on a rock?!
We already went outside once apparently with no cover? Cuz apparently the entire top is flat.
Q.E.D if they have sats good enough to spot us, they've spotted us already and we're on a timelimit.
OTHO there's also no argument towards decreasing the risk of them spotting us via other means as well. So fair enough, removed Stargazing from my vote.
We were only outside for a few minutes, and I doubt any military is going to keep an abandon base under constant surveillance 24/7. Mary was washed up on the top of the island for an unknown amount of time before finding the hatch, and no one came looking, suggesting they don't have the tech to constantly look at an abandon base (with little to no vegetation) and use facial recognition from orbit to identify a Design Child.
However, I wouldn't put it past them to have some kind of passive monitoring, looking for anyone in the region or tries to access the base a la ships, Fog, or other groups digging around. Mary would've then been too small for it to notice and slipped in through a door that apparently had no/little security.
Hmm, given that access from the outside seems rather lax (while the door was relatively hidden, it was just a ladder leading into the base, no checkpoint, blast-doors, etc.) suggesting that this bases wasn't ever all the important, except perhaps as a supply depot? Nearly emptied out, there would've been little reason to keep a serious eye on it, just relying on the base's computer to tell if anything goes wrong.
...
Actually,
how did our ship even get in there without anyone noticing us squatting here? Our automated systems apparently brought us here sometime after ganking Habbakuk, so that suggests that this base has been around for close to 200 years, still with power and working computers, and no one came to check on it (Or at least no one came to check on it in the many years Mary has been living here).
Yeah, we really need to check out what's going on.
[X]Reexamine the control systems. Brute Forcing this worries you, but you can't just ignore them...
[X] Do something with Mary:
-[X] Tell stories of your past.
-[X] Play games.