My T has expressed anger 3 times to me and it helped a lot. I have trouble feeling angry as well. She told me she was angry with my unethical ex-T and that was *hugely* healing because I struggled so much with wondering whether that was my fault. She also expressed anger at an ex-coworker who was harassing me, and most recently at my boss for how she fired me. It helped me a lot to know those things weren't my fault.