Theav, as a way of setting realistic expectations for your friend, my experience has been that for those who don't "take to it" naturally, it typically takes 3-4 sessions with me before someone is ready to ride on her own. This, of course, means that she also practices a bit in between sessions.

It's very frustrating for adult, intelligent, successful women (should I say beautiful, too?) to learn to ride. We're used to being successful in our lives so it's challenging to become a beginner again. Help your friend be patient -- the dividends are great (as you know).