I didn't know I was angry at my abusers, for a long long time. One day in Therapy, I was drawing as I talked (I do this a lot). Then I got very very quiet, and started making red lines over and over on the paper. When my T asked what I was drawing I handed it to her. After a short silence I said "It's anger". She handed it back and I ripped it up, folded an envelope and stuffed the pieces in the envelope. Since then, the anger will come occasionally. It always surprises me, but it feels good to express it sometimes.