Christine (Fallout: New Vegas)

 is living in the Mojave Wasteland in 2281.

The Mystery Bald Doctor is a woman in the trailer for "Dead Money", she is presumed a doctor because she is seen wearing wasteland doctor fatigues. She is seen stabing a Ghost People the courier has just shot. Also take note of the scaring around the forehead.

Background
She is seen working with the courier in the trailer for Dead Money, she also has an explosive collar, probably becuase she is being held captive by the same person holding the courier captive and is speaking during the trailer.

Appearances
appears in Fallout: New Vegas.