We use a multi-case analysis of nine most trusted advisors (MTAs) in six family firms to introduce the concept of mediated sensemaking - the social position, orientation and actions used by a mediator to facilitate adaptive sensemaking which unfolds when someone begins to doubt the sense already made. Our data capture the mediation process through which the MTA helps the Family Business Entrepreneur (FBE) interrupt momentum in sensemaking by slowing down action and facilitating doubt. Interestingly, the FBE has no motive to slow down and doubt his own sensemaking, yet the MTA can induce him to do so. We unpack the social skills and tactics used by the MTA to accomplish this pacing. We synthesize our findings in a grounded theoretical process theory that captures how the MTA facilitates adaptive sensemaking by regulating the pacing and temporality of the FBE's sensemaking. Key words: mediated sensemaking, adaptive sensemaking, most trusted advisor, family firms