Now she does smile. "You haven't guessed yet? You don't know? Years of chasing and fighting the Doctor across the universes. All in an effort to take one thing from him and you do not know?"

She steps in close again. "Should anyone in all universes have a claim on your life, it is I."

Because while the Doctor might have forgiven him for The Year That Never Was, she did not forgive him for turning her into the Paradox Machine.