Pet peeve of mine--coincidence does not mean happenstance. Coincidence means that there is cause and effect but not apparent from our standard understanding of the physical world. The 1968 edition of the Webster Universal Dictionary defines coincidence:

“Noteworthy event, circumstance, or series of such, which occurs in conjunction, or synchronously, with others, and is of such a character as to suggest a connection of cause and effect, although apparently no connection of the kind exists.” Carl Jung defines synchronicity as being a meaningful coincidence. I have a pub, which has not gotten the traction that I would have liked, dedicated to celebrating synchronicity and the "every-person-portal." That person, which we all are to some degree, is what your story describes. Here is my story about the pub if you are interested: https://medium.com/illumination/what-is-channspirations-97516b44185a