It becomes overshadowed immediately by the MC herself making constantly scathing remarks about only the state of her body and her intention to do away with it but never once does she give the slightest mention to her reputation as an abusive and spoiled idiot with no worth (which she deludes herself into believing that she no longer is with the recent acquisition of useless memories) or come to the obvious conclusion that treating people better is also a viable solution to alleviate the likelihood of reaching the death route that she still deserves. She then mistakenly deems the state of being fat ("lazy") and having inevitably natural body odor ("unhygienic") as the sole sources of the hate directed at her and has so far fixated on rectifying only those superficial qualities because her stupidity is so severe that it renders her incapable of multitasking/critical thinking, unable to repair slighted relations in tandem with her dieting.
That also means that her innate b*tchiness resonates so strongly with the original villain character's that she thinks that there is nothing about her past and current personalities worth fixing. And even her ex-fiancé who found her personality more off-putting than her appearance contradicts himself (he put value in the prospect of her being kinder than she seemed) by suddenly declaring upon their first meeting that the fact that she was overweight alone was the only factor that contributed to his contempt for her. But, what the hell? In the author's ridiculously, nonsensically flawed and underdeveloped world, the commoners scarcely bathe and even the wealthy do so only once a day; how the population has not yet died out but is somehow even flourishing is beyond me. This is also another testament to the MC's idiocy because she claims that she "hates Brittany for being smelly and lazy" even though everyone else including herself bathe the same amount of times and being fat doesn't correlate with reeking or being unmotivated. Also, have you been living as the mob character, as yourself, since before you remembered your previous life, or did your new memories make you? Make up your mind and decide who to blame already unless you have some variant personality disorder. It's creepy to refer to yourself in third person like an unrelated party when criticizing your body and then sometimes in first person when taking credit for pretending to be innovative and smart.
Her first thought when being confronted with the prospect of being in a world deprived of books is to overturn the house of all its possessions and to then throw a tantrum to the point of falling unconscious from fatigue once she finds nothing in her surroundings but the mess of her own creation.
She cares nothing for her own family's state of uncleanliness or of educating them about it all while expecting her sister (slave) to pamper her as the only civilized, well-kept one and monopolizing both the household's resources and the useless knowledge that she has of her first life. She thinks she's being magnanimous when lets her sister wash her hair with shampoo after she finishes and the water has been muddled from the grime of her own lol.
She has voyeuristic tendencies towards her sister's child romance and gets flustered like a pedophile over a five year old smelling her hair. Since when has being reincarnated into the body of a little kid equated to inheriting the romantic interest for one? She demands immediate ownership of the first materials (pen and paper) she finds at her father's workplace without questioning its origins or the reason that they are being denied to her. She even forgets that she herself does not yet know how to read or write the new language, and that there is no one suitable to teach her.
She chooses to be a further embarrassment to humanity and harasses her father in front of his coworker with her incessant whining while forgetting the prevalent case of illiteracy and poverty that is plaguing their society. It doesn't take much know the implications that a scarcity of products would present but the MC is incapable of even that common sense. What kind of books has she so obviously lied about being well-read in? "Psychology, religion, history, geography, educations, folklore, mathematics, physics, geology, chemistry, biology, art, fitness, language, fiction..." Does she mean that she studied the art of being utterly delusional and insatiable in her contagious, ever crippling stupidity? Is she a real bookworm when she has rarely if at all mentioned the titles from the previous world? She very well excels, at least, in making a show of the maturity that she, among a multitude of other virtues, doesn't realize that she devastatingly lacks.