When she wandered the border of life and death at the age of three, Cordelia realized that she had been reincarnated into a game she had used to play as a high handed noble girl. A dark future would await her if she fell in love with the Prince. Therefore, for the sake of a normal life, there was no road but to avoid the powerful prince and the heroine…… But just doing that would be boring. She finally was blessed with a beautiful appearance so she resolved to polish herself, firstly by beginning to study herbology…… This is that kind of story. 104a6u
6 LN Volumes (Complete)
113 WN Chapters (Complete)

Fairly typical as these go, though of course the emphasis is always a bit different.
In this one, that emphasis is on the main character's relationship with her family, especially her father and her absent mother, as she tries to build something closer with them, and on botany / herbology magic. Mix in childhood friendships with other characters from the original otome game (including, of course, the prince, though she doesn't realize that), and tech-development in the form of some basic chemistry / alchemy and you end with nothing groundbreaking.
My biggest qualm is what the tech-development involves: every time the MC starts talking about etheric oils and their seemingly magical medicinal properties, I get a bit of a taste of snake oil. Her previous life was probably something in the cosmetics industry. Maybe this is male bias talking.