*patiently (and with the knowledge of someone who deals with professional murderers and escapees on a regular basis)* Ten minutes is enough time for a mortal perpetrator to disappear into a crowd, Lord Ecthelion, never mind a being of this caliber. The fact that Erestor so clearly knew something was 'off' only highlights his lack of immediate action in response, especially considering the overall competence his position must require. *taps the files lightly* Taken together with the rest of the evidence, it's a jarring inconsistency. Inconsistencies often indicate tampering of some sort.
*removes his glasses and sets them down, looking at you over folded hands for a moment* *more softly* It is not my intention, nor is it my desire, to cast aspersions on your House or your staff. Far from it, in fact—I am here to hopefully help you, in the long-term. But for the sake of brevity and relevancy: if Erestor was too traumatized to react on anything more than an emotional, gut-instinct level, what was he doing on crisis duty at all?