I spent today being immensely frustrated with my therapist, so I know how it feels. However, I did also know that he wasn't doing what he was doing because he wanted to be a jerk, he was doing it because he thinks it's better for me. And it probably is.

You're such a great writer, I think you would be well served writing your feelings about this and using them as a starting point for discussion. You can read them off the page if you want. Leading doesn't mean conducting the session, she will start to engage once you pick a direction, I would imagine.