I would also add that before someone is a Buddhist, Muslim, Christian, Atheist, or Hindu (or any category for that matter) one is first a human being created in the image of God.  What i think, and clarify me if I'm wrong Bronwen, is that you are suggesting God is at work in the person regardless of their practice. And what you found beautiful is someone recognizing that beauty in your faith. 

Grace is established by God, not in the belief of the person.  if it was, it would be works.  Grace is simply recognized in the belief of the person. 

I personally have a lot of friends who are Buddhist and they would whole heartedly disagree with your assessment John.  I don't doubt that this is YOUR assessment.  Just be careful not to assume it is the practice of everyone.