Margaery walked through the halls of high garden to her grandmother Olenna Tyrell who was waiting for her on a bench in the large garden just out side the main castle.
"Good morning grandmother", margaery greeted.
"Is it true about Renly and Stannis?", She asked. Olenna never cared much for formalities.
"Yes", was all Margaery could say without snapping. The crown had been within her grasp and Renly had thrown it away. She was enraged that he would do such a thing. The night after Renly's surrender she, Loras, and Renly had dinner with Stannis and this old onion knight she Renly had told her so much about after the truce. It was a tense supper, Stannis had glared at her and Loras for nearly half the meal while Renly stuffed his family emergency like he hadn't eaten in a week.
"What should we do?", She asked.
"We'll back Stannis", her grandmother said.
"What?!", Margaery could hardly believe her grandmother's words. "He stole the crown right out from under us!"
"Stole? Please all he did was secure it for us", Olenna said with a smirk. "Renly has the men and Stannis has the experience. Our victory is assured."
"But we won't have the thrown."
"Every child Selyse has had has been still born other then that poor girl with the dragonscale and Stannis won't go off whoring like Robert. Renly will be king", Olenna said coolly.
"But how long must I wait?!", Margaery snapped at her grandmother.
"Possibly not too long", Olenna said, "Wars are dangerous and if he does survive the war we will wait until he is old and frail before slipping a poison into his drink".
"That could take years", Margaery pointed out having regained some of her calm from before.
"Yes, and we will wait", Olenna said firmly, "Stannis is not a man to be taken lightly. He held off your of of a father for more than a year." She paused and seemed to think of something. "Did I tell you about when I was at Robert's coronation?"
"No"
"I was next to Tywin Lannister as Robert was crowned king. From across the room I happened to see Stannis; he was watching his brother with that legendary frown of his on his face. Tywin saw this and do you know what he said to me?", Olenna asked. Margaery shook her head. "He turned to me and Tywin Lannister, the man who never had a good word about anyone other then Lannisters said 'there is the one man who might actually match us'"
Margaery nodded, "so we back Stannis' army".
"Long live the king".
"Long live the king".