A mile below an unremarkable desert filled with terrible beasts that wield terrifying magic from invisibility to plasma blasts to hypnosis, in the twisting dunes and burning heat, no water for hundreds of miles, she has spent most of the last several years. One of her caches was breached by an earthquake a few thousand years ago, and she kept managing to get herself killed before she truly came into her own for a good long while, so she's just now getting around to copying all the stone tablets and slowly moving them into a new library in a different hidden cave. It's stressful work, given how deep the accursed revulsion for literacy that the gods gave them runs, but it can be taken slowly, with a lot of wandering and introspection in between.
Another day in the deep darkness of her cave, lit only by her power. Another run to the surface to forage for cacti she can extract drinkable water from. She goes to the entrance and prepares to unseal it.