Olenna Tyrell: Luckily for you, the Queen Regent is rather distracted at the moment. Mourning her dear departed boy. Accusing her brother of his murder, which he didn't commit.

Margaery Tyrell: Well, he could have done.

Olenna Tyrell: He could have done, but he didn't.

Margaery Tyrell: You don't know, Grandmother.

Olenna Tyrell: But I do know. You don't think I'd let you marry that beast, do you?