After Becoming the Villainess, She Revels in Being Spoiled

[Historical romance, transmigration into a book, wicked supporting female character, childhood sweethearts, empress dowager, beloved by all] Luo Juexi is at home preparing for the civil service exam. One late-night can of coffee keeps her going, then her head spins and she transmigrates into a novel she read recently... And she's the wicked supporting female character, who will one day become empress dowager and send the heroine away to marry into another kingdom?! Forget becoming empress dowager. The person she just bullied seems to be the male lead of this book. Help! Is this a grand political scheme plotted long in advance, a fate forced upon her against her will, or a choice born of a longing held for years... As the saying goes: “White clouds come and go, but green mountains remain. Raise a cup and drink your fill...”