What should I do? Nothing really to do with love, but still...

My mom had an affair while she was married. The best way to get my feelings out is bởi nghề viết văn them. My mom kept asking me how I'm doing and I could never tell her. I'm hurt and angry with her. I told my therapist the letter I wrote to my mom. My mom had a lot of sex outside of her marriage. My dad tried working things out but it never happened. Anyways, I called my mom a "slut" for what she did. My therapist DEFENDED my mom. Therapists are supposed to be neautral with things. I never picked a side with my parents and they know that.
Should I get a new therapist hoặc what? I really need an answer...