When I lived in California in the early 1990s, I was friends with an African-American woman, and her community, it was "Miss Aunt First Name," regardless of your actual relationship to someone. So she was "Miss Aunt Shirley."
I love this example. In my A-A community, Auntie has a very specific meaning -- second in line matriarch.
Big Momma is the grandmother or great grandmother who's still living. Auntie is Big Momma in waiting aka She Who Must Be Obeyed.
That is what it is. Does it stop me from talking with my non A-A friends about their "Ants?" No. I just know that, when I go home, it's "Auntie." Ahn-TEE. Most Black people I know don't have "Ants." They all have Aunties.
It's understanding other people's culture.