SingDanceForLife, I remember early in therapy with my current T, moments where I was totally lacking in grace as I tried to change the topic. If we were talking about something I didn't want to be, I would blurt out, "I don't want to talk about this anymore!" and change the topic. Yeah, not too graceful, but effective. There was no way my T could misunderstand my intent. So I guess I'm suggesting, just be blunt and change the topic to what you want to talk about! And if she doesn't get it, you could try a different strategy--just sit there and refuse to say anything until she will talk about "your" topic. Childish, but also effective. (I've never done this, but have been tempted to.)

Good luck.