googley, I remember you have seen this T once, and aren't sure you will continue to see her--you're still in that trial period. I think revealing a lot before you have made a commitment to stay with her is not a good idea. Because, if you do end up discontinuing, you might feel vulnerable and exposed--to someone you didn't like well enough to continue with. That is not a good feeling. There will be time enough to tell this T, if you continue with her, that at some time in your past you SIed. There are important things I didn't tell my T until months and months after we started therapy. He was not surprised by this. It takes time to develop trust.