Dexter rolled his eyes amused. "Well, hopefully I won't make such a muck of things." He said worried that he'd do that anyway curious about what her species was if she was indeed an alien. Well, it would make sense as she seemed to be the only one capable of piloting the TARDIS and it looked mighty difficult. But what species could have started to look human before humans came along? And how long did her species live for? But he recognized the 'DO NOT TOUCH' red tape she put over that conversation. She'd tell him when she was ready to and no sooner. He offered his arm to her. "So, miss Doctor, shall we join the others gathered here to say goodbye to the Earth?" He asked with a smile to let her know he had dropped the conversation, and would only pick it up at her say so.