[PDUB]

Agree that the Doc can/should be the bad guy... that said, each situation is different. One technique we find particularly helpful is distraction. Much like a small child, distraction works to redirect the patient's thought processes to other things, removing the "necessity" to take the car out for a drive. You can head-off the need to go out by making sure that those needs are already met, and that will help.

In the short term, you might consider temporarily disabling the car, so as to take the pressure off you, should she not want to listen to reason... many are unwilling to acknowledge, or are simply unable to recognize, their disability and become agitated and belligerent when discussing it, insisting they are as sharp as ever! That is where we are, so distraction works well. This is called the "long good-bye" for a reason. It is incredibly difficult to deal with the repitition and confusion...

May God grant us all the patience to deal with it! Good luck.