Running? She felt like she was always running, at least with the Doctor she was.

"Here as in this street? Because I can see that. Or here as in this world, in which case I'd bloody well like to know why you seem so sure of that."

She would find her husband, she would find the Doctor, she would find her daughter. Of the three, one of them had to be here. Or, based on what Donna had said, several of one of them was likely here.