Big spoiler. As a courtesy to players who haven't played the full set of quests, let's keep definitive answers to this question in spoiler tags even though spoilers are allowed on this forum.
Both Kimbolt and Maravel ordered attacks on the convoy. Kimbolt's was frustrated because the convoy was diverted thanks to the forged letter. Maravel's succeeded; Anais was captured, but Boussy died in an accident.
