MUE, I am sorry you had a rough session, but you are not a failure. You gave it a go. You can try a different strategy next week. Maybe you could find the compromise between emailing and spontaneously spilling your guts. Try bringing a journal entry into session with the points and feelings you want to hit on. You can use it as a guide, or if that doesn't work, you can just read it. At least then you are putting your cards on the table in a setting in which your T is there to respond in the moment. If he evades, you may even have more courage to pursue your point after already having verbally expressed yourself to him.

This session doesn't have to be the end of the issue. You can just use it as a stepping stone in the service of learning assertive expression. You can do this. I certainly know that the motivation is there because this issue is really important to you and is burning to be expressed. There's just a learning curve which is totally normal when you're trying on new behaviors. I've got faith in you.