Should I speak with my mother?

When I was little (about four) she cheated on my father. She brought the guy to our house with father and I at home. She visited me and took me to her place, and at the time I could speak and I begged her to return to father and I, but she told me no and she didn't care.

I remember walking home and holding the pain and tears back. Tears started to drop and she asked what I was crying about. Seriously Mom? Then at the door she held me and was about to hand me over to my father and she told me not to cry. And I couldn't stop crying my eyes out. I sat at the carpet, waiting for the sound of her car, and the pain made me cry even more.

Then after a long time I was 19 and had a hard time in my life. I asked her to let me stay with her for a while. She refused.

I asked her why she left my father, why she didn't want me in court, and why she did what she did.

She began to say lies, things that I know are false. She said that father was rude, that she did not want me. She made excuses why she cheated on my father.

I became Pissed Off with a capital P. Strong language was from both parties. She kept trying to justify her actions. And when I started to curse at her she began to act as if she did not deserve it.

I ended the relationship, I have not been angrier in my life.

Father said that I should talk to her.

I don't know if I should. What should I do?