Dream #3: an invitation from my mother

I encountered my mother and an equally elderly but much heavier friend on a town street. My mother smiled with her usual radiance and said, "Do you want to play golf with us? We're going to play golf on the moon." I saw no clubs, no cart. My mother had never hit a shot. But she had a way of stating ideas both decisively and with ambiguous commitment. Was she delusional, or kidding?

What is this one about? My sense of her opaqueness to me? Though I derived my sense of life and my primary values more from her than from any other source, still in some ways I hardly knew her. Did her life make sense to her? At the core did she feel gratitude, or futility? Am I myself playing golf on the moon?