holiday and postcard coincidence

My daughter-in-law's parents met my best friend and her husband for the first time at my mother's funeral in Surrey in October 2006. In January 2007 my daughter-in-law's mother was in New Zealand, sitting on some driftwood on a very remote beach which could only be reached by boat. She was gazing out to sea when, you've guessed it, my best friend went and sat down beside her. Just to enhance the coincidence, the two couples chatted for a while until their relevant water taxis picked them up and they both continued on their seperate trips around New Zealand. About three weeks later two post cards dropped through my letterbox together, each telling me about the coincidence on the beach, but both were sent from very different areas of New Zealand!