Callahan still didn't understand, and no amount of explanation could make him. However, he was also aware that a lot of people didn't understand what his own mother had done and he would not judge Tracey when he didn't want people to judge his mother. "I guess I was the lucky one, since I get to have you for more than a cup of tea." They could discuss expectation some other time.
"I'm just the messenger," he said, smiling. "You can do whatever you want. It's your son, and you know him best."
He nodded. "How, I don't know. Where, at Hogwart's as usual, and he's his full age, all 115 years, and seems excited to be back." Mac hadn't been thrilled by the man's reaction, and told him all about it. "He's going to be an asset, if he wants to be."