Yeah, I'm with you there with the anxiety around waiting for e-mails; sending out something really important, all vulnerable, and then-
nothing. As a therapist, he may not want to bring it up until you do, therefore only working through what you are mentally prepared to; he may feel that by bring it up, he would be "running the session". I do hate that kind of feeling though;

Just for you to think about, what do you think held you back from bringing it up? It seems that you are real deep in therapy, having all those flashbacks; so it's gotta be hard trying to work through those and then have to worry about the e-mail too.

As to whether or not to continue talking about the slideshows-I think you should talk about whatever comes to your mind, that way you can pick it apart a peice at a time. I think your safe place starting to feel like a torture chamber-I'm thinkin that's because your talking more about what happened to you, which is really hard.

I wish you the best while you're going through this, I hope your able to communicate all the things you felt/are feeling with your T the next session, too. Hang in there!