Thinking about Funneh and her attitude towards most things (and just about her in general):
Funneh has always been a character I've never really understood. To a certain extent, maybe, but never thoroughly. Which is weird, because she's our main character.
People have died– gone through unimaginable horrors and have faced tragedies, and Funneh will laugh. She will crack jokes, brush off events that have occurred, clutch her stomach as she wheezes, smile too widely and convinces herself that this is funneh (haha, nice one). After a possibly dying, or possibly getting gravely injured, she will shrug and say something stupid like hey, at least we're alive!
She will walk away from seeing dead body thinking huh, that was weird, and she will smile awkwardly, eyes crinkling as if someone didn't just die. An actual human being that was loved, cherished, and has grown into who they were today was lost in this cluster fuck of an earth. And she's laughing.
She will express her concern, and show her worries, and do anything in order to help– going as far as to breaking and entering into restricted areas just to somewhat help. But after the whole thing? She just forgets, moves on far too quickly onto the next new thing that she should be concerned about, until the same subject is brought up once again.
It's like her life is constantly on fast forward, like her thoughts are running a mile per second, like her body refuses to let her rest and screams at her to keep running (seriously, what is she running from?). Gliding through time and desperately trying to live each day to it's fullest as best as she can. Stumbling through the motions, and squeezing her brain to not think of said motions, as just motions because they're so much more than that. She needs to be able to appreciate what has been given to her, because not everyone has this– not everyone can live like her, and she's trying, really trying here. She should be grateful, they always told her that.
She's like a shark! If she stops moving, even for a moment, she will die. If she doesn't keep running from this unexplainable dread that twists her guts into some incomprehensible creature that eats her from the inside, she will die. If she removes every single external factor from her life that doesn't allow her mind a moment to process everything, she will die.
Who is Funneh when she's not doing something? Who is Funneh when she's at rest? Who is Funneh if when she's unable to get rid of the dread that overtakes her senses the moment she's left alone with herself?
Maybe she hates studying for that reason too. It's probably mostly because it's boring, and she couldn't give less of a fuck about the topics they're discussing, or what's coming up on a test. What's the point? They're all gonna die eventually, anyway. They might as well enjoy their lives now.
Maybe this is why the series is so fast-paced is because of these reasons. Funneh is our protagonist after all. Even if she's flawed as she can be– reckless, stupid, and impulsive. It would make sense that everything goes by so quickly if we think about it through her perspective. But, hey, who knows? Because she sure as hell doesn't.