Isabel blinked, hard, quickly brushing away a teardrop that threatened to roll down her cheek.  "I had thought to save him, all of them," she whispered, more to herself than to the Doctor.  "To brave what others would not and deliver them from this evil.  My lord father was right, I am a foolish girl."<br/><br/>Then she shook her head, decisively but slowly, keenly aware of William's grasp and his own fear.  "What must be done, Doctor?" she asked, somewhat more steadily.  However unhappy she was, there were far more important things to face, and no one else who could face them.  If death was William's only possible rescue, then that was how it would have to be.