What a story! In some sense it doesn't matter if it was "real", or your dream. What matters is that your saw your Grandma, and said Goodbye to her.

This story reminds me of the wonderful book, For One More Day by Mitch Albom. It is a short and yet so powerful book. Just like your story.

Besides all that, I just wanted to add that your writing is admirable, Leonard. It is such a gift. Thank you for sharing it with us.