At first, he only nods, as he tries to decide how to continue. At some point, he should tell Obi-Wan about the holocron and the fight to get it. Wonder if he'd support the choice to destroy it.

For now, he decides to skip that.

"One of them was Cere's Padawan. I encountered her several times afterwards. During one of our fights, I managed to disarm her and took her lightsaber. I got to ... I saw what they did to her. The echo was so powerful I couldn't see anything else, or move. It was really painful. I don't want that to happen again. To be overwhelmed like that. Do you know if it's possible to learn to control it better?"