<p>Perhaps this is another opportunity to barter. As a voice teacher, she probably has occasional studio recitals involving having her students sing a piece or two each in front of an audience. She might be willing to help you with your audition if you cover her travel expenses and offer to accompany her students at one such recital. As an extra benefit, this would give you some practice accompanying singers and introduce you to a group of people who sometimes need to hire an accompanist.</p>