Yes, well, she's even less eager to discuss the Master, particularly that one. Being tortured for a year was one thing, but then having the Doctor invite her torturer to stay with them was quite another magnitude of pain. Best to stay far away from all that. And his subject change demands her attention.

"You know of the metacrisis?" She sounds somewhat alarmed, because of course she's checked his memories for when he is from, and that's really not appropriate for him to know about. The rest of his words aren't any less off-putting. "I do not like duplicates of yours." They confuse her, and not in a good way.