Her mother somehow raised her for like 11? Years in a box, like what? Imagine someone actually trying that, bathroom, eating and so on, and thats ignoring emotions, thats going out of your way to tortue someone, makes no sense, only in the story for the tragedy.
Large lands are corrupted and only spirit users can fix it, and shes the only spirit user left (or so they say). But hey she'll totally lose her humanity if she does this shit that helps people, oh noes the tragedy.
She's got super strong bloodline but that would make her harder to bully so author just goes, "even though everyone thinks she should be strong, shes actually super duper weak", tragedy for no reason or logic.
King can order her family like slaves, tragedy 100%, also complete nonsense since if the kings family could order them, they'd already have killed the kings family, nobody would just leave themselves as slaves for no reason. If this was a non tragedy story they would have basically built and propped up the kings family from the making of the country, but here they are slaves. Hell, all the people working for them would have killed the king even without orders so don't go with any "they ware ordered not to" bullshit.
Wizards are super evil and actually insane, yet another tragedy bullshit plotpoint.
MC is constantly negative and thinks every last one of her negative ideas are true, might make sense if you ignore the "completely forgotten by the author" reincarnation plot point. Still, tragedy bullshit.
MC thinks her knight should belong to her and not date, what? Is she in love with him now or something? Thats super dumb. Creating conflict by making MC do stupid shit is basically a large part of this story.