'The Happy Medium' is the privately published (@1995), collaborated work of Margaret Magnus and Janice Tarver. 

As follows is part of Margaret's dialog: '... I'm embarrassed to admit that the first thought that came to my mind as she finished up was, 'What does a person charge for irrevocably altering your world view?'  It was one thing to read accounts in books, but this was my life, a life that I knew intimately.    I was at the time very heavy into the business world, licensing software to large corporations for price tags in the tens or hundreds of thousands of  dollars.  And I vaguely sensed that what I had just received may be worth a good deal more than that... So, how do you evaluate it?  Ah, ha! I thought, maybe she charges a large amount of money and just hires a private detective.  I decided that I wasn't going to pay her a cent over $500, because beyond that, she could just hire somebody to scope me out.

I finally asked her what she charged for this service.  She said that if I felt so inclined, she would accept a donation of $15.  'Say what?!, I asked.  Though clairvoyant, she clearly wasn't a mind reader, because in response to the shocked expression on my face, she hastened to add that was only if I thought the reading really merited the full $15.

For approximately two weeks after that reading, I drove in a 10 mile loop around and around my house.  I didn't even bother to change my route to take in some new scenery.  It was as if by driving in circles, I might be able to get my mind to stop whirling around in my head.  I found myself again and again thinking through what I might have told Gill.  I found myself asking my husband what he might have told Gill about my family.  And of course, I asked Gill what she had said to Janice.  Gill naturally told me that she may have given (to Janice) my name, but certainly nothing else.  And though I still suspected at the time that it wasn't quite true, and in retrospect I now know, of course, that it was...'