I understand that flashbacks are horrible, and of course we want to be able to reach out to T so that we can be talked through it all. But I'd also encourage that you talk to T about coming up with a plan for when you have a flashback and are on your own. Because stuff like this happens - T's are non-responsive, sleeping, busy, have a crazy phone, etc, etc. And then client's end up feeling alone in a world of hurt. It's not fair. The best thing T can give you to work through flashbacks, is the ability to work through them on your own as best you can.