[Her words ease his mind (so it had mattered, so he hadn't failed in his duties again) but only for a moment. As it happens, his last memory is hardly a pleasant one. He glances away, and his hand goes absently to the handle of his sword, a tense gesture.]

... Lord Jaime had recently returned to King's Landing, and Brienne with him. I spoke with him a while, and he told me to go to her, to judge for myself the truth of what she had to say for her part in Renly's death. I did as he commanded, and later delivered her to him. It was after that night that I found myself here.

[He had thought of that night more than a few times since his arrival, but it still stung, for more reasons than he cared to admit. Enough, even, for him to momentarily forget just how much time must have passed for Margaery.]