I mean, I don't? But that's largely because moment-to-moment, a decent number of her beliefs regarding herself and her view of the world seem like post-hoc rationalizations to ensure the world still makes sense within her negative frame. There's recurring themes, sure, but up can be down and down can be up if it relates strictly to herself and that is not a recipe for consistency.
I would argue that she has a highly consistent internal worldview with a large number of interlocking broken premises, and that they conspire to maintain that worldview in the face of all evidence to the contrary.
The relevant broken premises are:
1: Moral worth is judged by your level of innate talent. The talented rule the incompetent.
2: It is not possible to learn things, only to discover that you have the innate talent for them.
3: If you are incompetent at something, it's because you don't have the innate talent for it.
4: Only one failure is necessary to prove incompetence, regardless of your previous history.
5: Talent is inheritable, and therefore more is expected of those with talented families.
Consequent beliefs:
6: It's better not to try than try and fail, because any slip can and will be held against you.
7: By the same token, it's better to hide and repress your problems than share them with others.
8: It is impossible to prove that you are talented, but possible to prove you are incompetent.
9: You, coming from an illustrious family, are expected to prove that you are talented.
10: Being part of your family means you ought to be more worthy than other people who aren't.
11: You ought to be good at the things your family is good at.
12: Since you've failed a lot, you're incompetent. This is doubly bad because you were expected to be talented.
13: You have to put all your time into refining your skills. If you relax or spend personal time, you are sinning against your bloodline.
14: People who aren't ninja don't matter. Ninja who aren't Mori hardly matter.
15: You should emulate those in your family who did better with the resources they were given than you.
I could go on, but I'm starting to repeat myself. This is the core of it - talent defining moral worth, disbelief of the capacity for real growth, serious problems with emotional intimacy, and unjustifiable pride as a defense mechanism to protect inner fragility.
Further knock-on effects:
- Estrangement from your own emotions.
- Social anxiety, because everyone is always judging you.
- Simultaneous belief that you're better and worse than everyone else.
- Perception of oneself as a fraud: setting unattainably high standards.
- Living in a continual state of burnout due to pushing yourself too hard.
- Black-and-white thinking: inability to acknowledge flaws without rejecting the whole.
- Similarly, hero-worship of those you admire and inability to acknowledge their flaws.
- Deep desire for validation from your family, even as you reject their standards of judgement.