For all the parts he shares, the memories of Durmstrang dark with stress and unhappiness, frustration is not an emotion Heine associates with it. He keeps himself at arm's length.

When they return to the memory block he pays attention. In Jade's recall of the event, Professor Eichel pauses, smiles, and answers. His voice is deep and resonates strongly with something within Jade.

Why would you think that?