Automatically, she tried to parse the word frequency but was quickly forced to give up as the Doctor kept on talking.  Apparently this tiny object would allow him to talk to her and hear what transpired from a distance, though she could not imagine how.  Her vague ideas about how something like that might be possible were each more outlandish than the last, and she reminded herself to ask the Doctor about the workings of the device later.  Assuming there was a later, of course.<br/><br/>But she had known all along she was moving towards danger, and while this was a far different sort of danger than she had imagined, in the end it would hardly matter to her if she died at the hands of an outlaw or through the strange science of a Cyberman.  Still, she shuddered to think of being transformed as William had been, without even her mind her own, and she studied the Doctor unhappily as he spoke.  "I will trust you in this, Doctor.  If this is what must be done to put an end to these Cybermen and their cruelty, then I will do it."  She reached up and fitted the earpiece awkwardly into place, then turned towards the cave.  "I hope this will be over soon," she added, touching the earpiece gingerly.