Of course, she probably wouldn’t have believed him able to not give in to the temptation, and it’s hard to say whether she would have been right at that exact moment in time.
Considering that she was reacting to the signs of time-turner addiction, a phenomena that had been observed in others before, I think it was a safe assumption for McGonagall to make.
Considering that she was reacting to the signs of time-turner addiction, a phenomena that had been observed in others before, I think it was a safe assumption for McGonagall to make.