Is the Heiress of a Powerful Family the Foil Villainess?

[This novel is about 200,000 words long, won't be paywalled, and will update every other day when possible.] Song Sirou was bored, so she let a friend drag her to a banquet for real and fake heiresses. That night, Song Sirou dreamed she was the foil female character in a real-and-fake-heiress novel. The author had given her exceptional beauty, an unmatched family background, and loving parents and relatives, all just to highlight the heroine's admirable qualities: her diligence, perseverance, and resilience. Song Sirou had never been anyone's foil before. Gritting her teeth, she thought, Fine, so that's how we're playing it? But it's not yet clear who's going to be whose foil. Reader's Guide: The real-and-fake-heiress plot in the original novel doesn't take up much space. This story is mainly about the heroine's love life and career. Theme: Enjoy life.