The Protagonist Must Be Truly Vicious and Really Good at Putting on an Act

Looking for books like *Quick Transmigration: Love at First Sight*. I've read so many stories where the protagonist plays a vicious cannon-fodder character and gets found out. I'd like the opposite: a protagonist who's two-faced, acting like an innocent, sweet little white flower on the outside but actually a nasty, manipulative green tea. She should be really good at pretending.