Thank you all for your experiences. Those are really helpful!

What do I want to get out of it? I don't really know
I guess I want her to see all the things I've written down. It's a trauma journal, so it has my memories and traumatic experiences in it. I guess I want to know that she knows about all that junk and that I am no longer the only person on earth who knows. And it will give her a window into how I think and experience the world. It's terrifying, but I want to be more open and trusting with her, so I want to share this type of thing.