I LOVED that! I really really REALLY wished I had a friend who would write such a book with me - but obviously completely different than the one I had read, lol! So I asked a friend, and she said she would do it only if she could come up with her character first, and then my character wrote the first letter to her character setting up the storyline. I agreed, and once I had her info, I wrote the first letter. She never had a chance to devote any time to the story - her babies were little back then - and so the story got forgotten.
HOWEVER, since I was digging through my old notebooks and came across it, I decided to post it here as a treat to myself since I couldn't find the notebook I was looking for :-) Warning, there is one non essential part of the story that is missing, but it's probably better that way, lol!