How do I even begin to explain Lydia? Lydia is flawless. She has a closet full of obscure jumpers and a silver adipose stress toy. I hear her hair is up for The Whoniverse's Next Top Hair Ruffler (against Tennant) . I hear she watches youtube videos. In her room. Her favorite show are Sherlock, Doctor Who, Community, Elementary, The Mindy Project, Scrubs, Gilmore Girls, and Arrested Development. One time, she saw Carey Mulligan in pret-a-manger. And she didn't say anything. One time, I punched her in the face. It was awesome.
David Tennant (10th Doctor) married Georgia Moffett (the 10th Doctor’s daughter in the episode “The Doctor’s Daughter”), who is the daughter of Peter Davison (5th Doctor) and they had a daughter. So the Doctor’s daughter played the Doctor’s daughter in “The Doctor’s Daughter” and then married the Doctor and had the Doctor’s daughter.