It could also be that she was playing around on the internet and registered with ICCDS and did not realize what she was registering for. I started mystery shopping after I watched a couple of family members do mystery shops for 3 years. Watching their experience with mystery shopping was new to me and I knew nothing about mystery shopping. When I started registering with companies, I was very surprised to see that I had somehow managed to register with two mystery shopping companies a year before both my family members started to mystery shop. Reviewing the information I had entered, I DID actually register with both companies, although I had no memory of doing so and I did not know what mystery shopping was.
Just because she didn't know a thing about mystery shopping before coming to your house does not mean she did not register two years ago. Although I didn't know a thing about mystery shopping, I somehow managed to register with two companies.
Registering with a MSC is easy to do, and, since no real instructions are provided, it's easy to not have a clue and to forget you've registered. Just be happy that you've gotten her started and she can make some money.