Hi AnxiousGirl, I'm sure it doesn't feel like it right now, but to me that seems like a really positive move, and so well done on managing to do that??!!!
I know it may be hard right now........having made yourself vulnerable, allowing someone to see the most private of things, having everything seem so much more "real" with someone knowing and not even knowing how they are going to treat that information/you........but it can really all be part of the process of working through things and for some things you do need support to work through them.
Now for her discussing things next week........just remember it's a two way process and you don't have to discuss anything you're not comfortable with, you have as much control over what goes on as she does.
But perhaps for now, if you want to, you could pick one or two things from the email that you are a little easier talking to her about and then just let her know that you're not ready to go into everything yet but for now...........
And just remember your T should be really sensitive to what's going on/gone on for you.........she shouldn't be lecturing you, trying to force things out of you, pushing you into talking about things that are going to be traumatic for you without giving you plenty of support and only when you're ready, and she shouldn't be judgmental.
So hang in there, give her and yourself a chance, and really well done!!!

Alison