"Ah. I see," The Master said, his mind sort of tuning out as soon as the words 'I've remembered some things' passed his wife's lips. One of the things that had made this transition so simple was the fact that Lucy hadn't remembered anything. She'd barely recognized him after being revived from her death via the Toclafane, and after that, she only knew whatever he'd deemed to tell her. And he had been sure to leave out the part about him being an abusive, homicidal maniac with control and trust issues especially as that hardly seemed relevant when he wasn't going to such a major issue when he was human. But if she was remembering things now, she had all of those blanks filled in for her. And how she handled that information would probably spell out how this went from here.
At least her avoiding him lately made some sense now.
"I suppose I probably have a good deal to answer for, then," He said, his features screwed up to be as unreadable as he could manage when he felt as though what little grounding he had left was being pulled violently out from under him. "Depending upon what you've remembered."