Cool, but once again it turns out that real life is not like a Dan Brown novel. No Illuminati, no antipopes, no buried treasure, just everyday activities that apparently needed some level of protection.
I'm going to have to use a corkboard and some red string to sort out everything that's happening here.
My guess is that the message must have had some other meaning in some way, even if personal, or that there's something about putting paper in the pocket for tailoring reasons?
Maybe she just needed a place to put the message and forgot about it.