You can save your dad skills for after I have dinner with him tonight.

[She smiles a little, pleased that he's offering to help her out in the sleep department. Her hand reaches up to curl around his bony finger, and she gently guides it away from her forehead.]

I haven't exactly slept since we've been here. Just bits off and on. I didn't want to worry you with it. It felt so stupid, compared to being trapped here with no sign of the TARDIS.