If he was included in the meeting, since there's nowhere else to be, Aubrey suggests himself as secret keeper but mostly as a lol-joke (but would defend it with well no one would think of him duh) and mostly spent his time hiding behind Pepper and only half paying attention but would have answered stuff about the ministry, who was loyal who wasn't blahblah, if asked. he wouldn't offer anything, but also sees no point in keeping secrets anymore.