Salsa, I bet if you poked around a little you could find a coach or a LAB Instructor who would be interested/willing in putting on a woman's clinic for you.

Beginners are definitely an untapped audience. Which reminds me (totally off topic) . One of missed opportunities at most bike shops is that they send brand new riders out for test rides all by themselves! Bike shops would do customers a great service and sell more bikes if they had a dedicated sales staff who would test ride with customers, teaching them how to brake and shift and giving them small tips about form and technique.