One does not have to tell T everything; only what is important to you and that you want to work on. It was my second time of seeing T for 9 years each, maybe T-year 16-17 before I mentioned I was abused by a man of her nationality? Wait until you have had some pleasant surprises where you say something difficult and get an over-the-top wonderful response from T you weren't expecting. My T picked up on the significance of what I vaguely implied and was right there with the "only" right response. Just getting that response from someone almost made the experience worth while (not like I could get rid of the experience, it was mine anyway, no matter what).