They should have offered 'aint' as the pronunciation for aunt. I had to compromise with 'ant', which I use on occasion for an aunt I'm not too close to.
I think Mississippi uses the Aint pronunciation more...but I think we, being removed about 80 years from MS, had degenerated to saying Ant. In New Orleans, though, you're as likely to here Ahhnt as Ant, or Aint.