The Doctor's eyes got wide, with anguish, as he listened more, and babbled a bit, he was upset by the Master's recounting of yet another version of his worst nightmares. "I'm so sorry. I don't know why my presence would. We've were in close proximity, no getting away from each other, during the war, and once they were gone they were gone. I'm not. You'd tell me if me sitting here made it worse, right?"