Honestly? Maybe you would do better with letters. Problem with conversation is it's too uncontrolled. Flies off in directions, never goes where it's directed. OK. She pushed. You didn't want to talk about C, but she pushed until you showed her. Then it took a while to filter in, until she realized you weren't just doing medical research, it was personal. So now she is maybe on the same page as you. Maybe. So, truth be told communication is the name of the game. Can you do it without losing control? Not sure.
Usual rules: talk only about yourself. Do NOT use the word "you". Talk about feelings or facts. No, "I think that", or "I feel that", or even "I believe that". But you can say, "I feel sad, or lonely, or frightened, or whatever adverb is truthful for you. But NO "you said this, you did this, you are this...." In fact there is no need to tell her anything about herself. She is the authority on that topic. And vice versa, she should not be telling you about you, because, you already know about you. You can fill in the blanks about you.
And most of all. Stick to the topic. Don't talk on and on. Keep in short. You want to talk about health, fine, health it is. Not visits to other cities, not money, not everything under the sun. Because, everything under the sun is NOT in tune.
