It's a small world, isn't?
I had an Aunt Tiny, too.
But she was 6 feet tall and weighed so much she had to get a special bathroom scale.
When I was growing up in the Alabama and Florida, we used to call lots of people aunt and uncle that were not related to us, as a term of respect and familiarity.
When I was little, I took this too far when I would call strangers aunt and uncle in shops or on the bus.
You even called household helpers "aunt", if they were a lot older.
It never seemed polite to call an adult woman by her given name, so you would say Aunt or Miz.
I never knew exactly what Miz meant, Miss or Mrs., but it sounded polite.