You're referring to the manga "Shiro Buta Kizoku Desu Ga, Zense no Kioku Ga Haeta Node Hiyoko na Otōto o Sodatemasu"!
She was also Hanako Yamada, a 38-year-old office worker from 21st-century Tokyo who had died of overwork and reincarnated into a fantasy novel she’d never read. Which was ironic, because Hanako had been a huge fan of otome games and isekai manga. She used to stay up until 3 AM binging series about villainesses who got second chances. You're referring to the manga "Shiro Buta Kizoku
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The protagonist, a kind and intelligent young woman, is the central character of the manga. Her experiences and emotions drive the story forward, and her relationships with other characters are a key aspect of the narrative. a kind and intelligent young woman