"Alien." The Doctor nodded pointing to herself. "Time machine" She then pointed to the consul in front of her. Once Nora told her that she had been heading toward Saint Mary's The Doctor set about fighting the TARDIS into heading that direction.

"I'll get you to the church." She told Nora, "It'll be a bit circuitous I'm afraid, navigation's a bit wonky right now." It was Nora's turn to talk to herself, but The Doctor listened to what she was saying. 

"Siblings can vary. Some can have compatible DNA others not. That's why some can give bone marrow to each other and others can't. I'll get you there. We'll get to your sister before they can." Her voice was serious as she told Nora this, it was a reassuring seriousness. The Doctor sounded like this was something she could handle. Despite the aire of being unhinged, the woman seemed ready and able to take charge.

"I don't know what they could want with the pair of you, but it can't be good. I intend to stop them." The TARDIS lurched suddenly as if it had just been hit by a truck. "That was terrible." A loud screeching noise started emitting from the control panel. "That's worse. Good news, we're about a block from Saint Mary's bad news, the TARDIS isn't going anywhere for a while."