Warning: Takes place post-series and contains major spoilers.
It's cold in the cell beneath the Ice Palace. It's one of the first things Jewelia is forced to accept, followed by dozens more rules and realities and failures.
It's empty. She is the only one in the entire cellblock, a lone prisoner in a place meant for hundreds. No one can hear her commands. No one is here to die for her, or even worship her. It's boring.
It's depressing. She's alone, and thus alone with her thoughts. She has to think, remember, reminisce about what she has done and what she should have, could have, would have done instead.
She doesn't go insane. Not any further than she already was.
In her darkest moments, she wishes she could. It would make it all easier.