After The Heroine Vanished

Who is the real heroine? The Transmigrator who changed the story of her favorite romance fantasy novel by marrying the hero for her survival, or the Original(OG) Female Lead who thinks the Transmigrator--- a grown woman possessing the body of a child--- is creepy for marrying the underaged Male Lead? Who is YOUR heroine? The Transmigrator who swears to divorce the Hero once she saves up enough money to run away, or the OG Female Lead who believes the Transmigrator won't be able to escape from the obsessive Male Lead? This is the story after the heroine vanished, and guess who disappeared between the Transmigrator and the OG Female Lead?