ANN: Is that why you never told her? Because she lied to you? Because deep down in some strange way you think of Anya Kingdom as the person who killed your friend Ann Kelso?

DOCTOR: If you can see into my mind and memories, Lost, then you already know the answer.

ANN: Oh, I see even more than you think. I see your pain and rage and the loss. Oh, so much loss. Sara, Katarina, Oliver Harper, Adric, and all those who’ve come since. Lucy Miller, Rose Tyler…

DOCTOR: Don’t say another word!

ANN: Donna Noble. Gallifrey itself. Would you abandon the call you sacrificed them for by throwing your life away now for one deceptive, violent woman?

DOCTOR: Anya Kingdom is my friend.

ANN: Oh? Are you sure?

ANYA: But… what if…

DOCTOR: Ah, you can’t torture yourself with the what-ifs. They’ll eat you from the inside out if you let them.

ANYA: The what-ifs. Yes, I’ve been woken up by those in the night more than once. Sound like you have too.

DOCTOR: Oh yeah.

ANYA: Have you lost people you’ve travelled with before?

DOCTOR: I don’t like to talk about it.