I hate my mother and dream of hurting her in my nightmares.
I hope you are joking, why do you want to hurt her?
She was a bitch towards me when I was a kid and she never stood up for me in school.
It's difficult to love a parent who didn't treat you well when you were a child, and you're not obligated to love anyone just because they're family. However, if you're having fantasies of hurting your mother then you should probably seek therapy. You'll only hurt yourself if you continue to hold on to negative emotions and sentiments.
It's fine. I should find another victim to take my frustrations out on.
Well hurting others won't fix what she did to you. You only perpetuate the misery. Instead of getting even have you considered volunteering for youth programs?