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 s*upidity 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.

She's literally a shutin and only the servants and her family knew about it. She did took step to be kinder to the servants and their children, but after most of the servants around her were fired for stealing, the need to fix her former reputation is literally null.

Remember the setting is medieval age and they didn't have a waterway in the MC earldom. This is less looking down on common people and more how thing used to be. Even in the modern age, just decades prior, it was normal to only bath every other day in my country. Turn out not having accessible water anytime you want make people consider frequent bathing to be wasting precious resource.

The lack of accessible water was considered a bad thing that should be fixed, with the protagonists planning to build the water system for their territory first thing once they managed to pay the debt.

So yeah, real life is stranger than fictions to some. You might not be able to imagine 'daily bath only for the rich' and think it's looking down on common people, but the world didn't always enjoy first world country modern privileges.

calls her cousin sly constantly for deceiving people into believing that he's an angel but in the next moment she becomes somehow innocent about what he did behind the scenes to make her ex reconcile with her saying she doesn't understand even when the person explicity told her. And many more.

At one point she even finds out she's been eating food while sleepwalking and ties herself to the bed in her quest of slimming down.