I think the name is beautiful, and as someone who went to school with a girl who had an Irish name, once you're told how to pronounce it, it is not difficult. Xenophobic people need to get over themselves.
Living in Ireland personally, I've only ever heard this name pronounced "EE-fuh". The "a" at the end of Aoife is like the "a" at the end of Sarah or Veronica.
This is a beautiful name with a great meaning & history. However, I wish to pronounce it right. I have gone to several sites and been given eefa, eefah, eefeh. Should I pronounce the fa like far, or fa like beginning of fa ctory, or feh like fe tch me the ball?