It was not treason. Robert Baratheon's rebellion was not treason. [ It was victorious, that's why, and she knows that - but there's a point here. ]

And he was not the one that ran my brother through with a sword. He mourned his sons death, and I mourned my brothers and both of them were killed by you.

[ what is this clever wordplay. it's just overflowing! are those plurals or possessives!?! the world may never know. ]