Do you think you can say something simple, like, "I don't think I'd like to get into that today." Then if there's a specific topic you'd like to discuss, then that would be a good time to be clear with her about what it is you would like to focus on. Once she gets a feel for the topics that you are not comfortable with and which ones are important to you, then this won't be as much of an issue anymore, given that she's a good T.