The Postcards for Mom Pranksters

My mom's "ended this way" because she stopped getting mail. It's hard to update when there's one postcard a week, or every two weeks. When she did get mail, or made mention of it, I would update.
This weekend we had a family cookout. Mom brought out her box 'o stuff. My aunt had taken one a few months back, looked in her phone book and found one of the people who'd written mom. Aunt Cyndi even drove by this womans house and gave my mom her last name and phone number. My sister in law asked for Dr. Tim's info and looked him up online. My family started talking about the letters, and had different ideas how it all started. Dad and I(the only ones who actually knew about the whole thing, other than Tom) just kept saying it was harmless because everyone was being nice(except the jackass who signed mom up for the Disney magazine, that was just wrong). Aunt Cyndi said "The weird thing is, no one person would know all this about you! I mean, *I* don't even know that much about you"(which isn't hard, they're not close). But my brother Jay agreed with Cyndi, saying it must be a group of people giving the information up. It's still great knowing she has no idea how this all came about.
I'm trying to figure out a way to get her to write to the new "victim"...maybe some of you could send postcards saying something like "Let's pass on the torch to Dana's Dad." and give the address and some info? Then it might seem like she was part of a grander scheme and it's someone elses turn now?