Disclaimer: All belongs to George R. R. Martin and HBO.
The Game
Margaery knows the game better than her brother, altough not so good like her grandma, and she knows the risks of entering in the extremely protected lion's guard. But the Tyrell's entered by the biggest door, with the promise of marry her with that blonde boy, not so handsome, with that blue eyes that sometimes spark with a cruel blink. Her grandma, Olenna, has interests on find out who exactly is that boy. But she have already said that Joffrey looks like an idiot, a Lannister who cannot compete with his grandfather intelligence.
To Margaery, Joffrey doesn't matters. She knows that she is completely able to manage his threads like Sansa Stark can't. Margaery knows a lot of things about men, even though she only was the wife of the king who is in love with Loras, her brother.
Margaery knows that men like King Joffrey are easy to dazzle, specially with beauty, better if the beauty flatters them. She knows that man like him want to be adore and feared, all at the same time. She knows that man like him, loves to terrify the ones who looks lower than tem, ones who let others humiliate them —like Sansa Stark, she remebers—. She knows how to manage a man like the King, although Olenna, her grandma, are worry.
Margaery knows that she shouldn't contradict him, that she has to make him look bigger than he really is, even thogh he is just a little boy who takes cover under her mother dresses. And the queen, her mother, are afraid because Margaery is more beautiful, and younger. The future queen of all Westeros knows how to manage her future husband, although Lady Olenna insists that her granddaughter marry that psychopath.
Margaery smiles when she hears her grandmother talking, because sometimes, she guesses what thought is in Olenna's mind. She knows the game she is playing, like another piece moving on the board and she knows that the only thing she has to do is to show to the King she is not weak, like Sansa Stark.
Nea Poulain