They All Say I'm the Vicious Female Supporting Character [Quick Transmigration]

A so-called vicious female supporting character has a simple job: deceive the male lead, trample on the heroine, serve as a proper foil, then make a swift exit at the end so the leads can have their beautiful happily-ever-after. Shen Yao, confidently: I may be a rookie host, but I know how this works. All I have to do is follow the script step by step. So could someone please explain— In the substitute-bride story, she's the supporting character who runs away from her wedding. So why does the aristocratic male lead catch her the instant she flees and send her straight to the bridal chamber? In the academy story, she's a scheming courtesan. So why does the male lead grab her by the wrist and threaten her into being with him the moment she infiltrates the academy? In the ruler-and-minister story, she's posing as the top scholar's wife. So why does the emperor take one look at her during a palace banquet and decide to steal his subject's wife for himself? Shen Yao, hurling the script aside: Screw this. Whoever wants to play the vicious female supporting character can have the job, because she sure as hell isn't following this plot anymore!