I defer to James T. Harris. He too brings up his grandmother, but the takeaway is in the last two paragraphs:
When I asked my grandma about how she felt about the interracial marriage, she looked up at me with a perplexed expression; “What’s the matter with you?” she asked. I reminded her of what she had told me a few years back. Her response was: “James, people change. That was a long time ago." She was in her late 80’s.
Now that’s the audacity of hope.
Go, read.