I am a white Southerner -- both my parents were from small communities east of Atlanta. My family always said "ant" (for sisters of a parent)Â but the African Americans with whom I have worked both in Alabama and in DC predominantly say "awnt" or "ahnt."
When I heard the discussion this morning, I immediately did an internet search and found maps at http://www4.uwm.edu/FLL/linguistics/dialect/staticmaps/q_1.html showing the distribution of "ant," "ahnt," and "awnt." Unfortunately, there is no differentiation as to race.
I have also noticed that Blacks commonly pronounce that word as "awnt."  And, while Hispanics/Latinos are not a race, I have been surprised that I sometimes hear "awnt" from them.
Your  "while"  suggests to me a usage that I always find interesting:Â
While a mild-mannered person, she always stands firm where it matters.
While it needs some repairing, that house is mostly a solid property.
So  While x, y   implies that x and y are contradictory, with x being the context aimed to heighten y.  What an efficient way to say so much.
But in your usage I am not at all sure you are doing the same thing, Â Either way, I am not clear of your meanings.
I also notesed that Blacks commonly pronounce that word as awnt.