[She rests her hand on his shoulder. Oh Rory, she's got Amy's same weakness when it comes to you. Her heart aches when Rory is upset]

Now maybe you have an inkling of the burdens I carry. And that is just one secret, Rory.

[She feels she should clear a few things up]

They wanted me because....because of my DNA. I'm human, yes, but I carry Time Lord genes as well. Genetically, I'm the missing link between humans and full time lords. Naturally...they thought the only way to take down a Time Lord was with another Time Lord.