id say thats bc her whole character was reliant on being loved by others, as a main character, her entire character was written to be loved and treated as the center of the universe, but now that its been taken from her, she doesnt know what to do or how to act
this, not to mention, in the OG story, she's being supported by crown prince and marquis
kael even did the dirty work to kill her biggest enemies (and then she condemned him coz for her kill=bad)
her only redeeming feature was her healing powers, her kindness (?now she's just delulu), her faith (which now, she's forcing to the nobles)
she didn't even bother properly learning how to treat the nobles, she's the crown princess, she got to adapt, everything's being done by the Ms.Harmonia
Dead? No right? That old man did not get a moment of peace throughout the story.
I feel like Diana got ripped of her personality at some point in the story. I didn't even get to know her and it was already gone. I never felt the need to hate her.
I just feel sorry for her character. She's basically being used as a mop to wipe the floor.