By the nature of things she’s spinning around her center of gravity, which is somewhere not too far from her navel. The feet, being farther away, are getting more acceleration (same angular velocity, greater distance) than her head. In both cases the blood is being pushed away from the axis of rotation.
ETC: Local news reports that the (female, age 74 – corrected) patient was not seriously [1] injured and is doing well. No aspiration.
News also reports that the stabilizing line was in use but something or other. Pilot got to an altitude where he could crank up the speed, which took the patient out of the direct downdraft and got her to an LZ where she could be transferred to an ambulance.
[1] Broken bones, abrasions, etc. but nothing life-threatening even at 74. Why she was hiking on a June afternoon is another matter.
