I Am Sick of Stupid People Doing Stupid Things

I don't understand how a family member can be upset with you because you feel a certain way about someone who tried to cause you harm years ago . How can anyone side with someone who put a false accusation on you. Yesterday was my daughter's birthday and my brother's long time gf of years . who three years ago called the cps on me with false accusations. I do not like that woman at all she was there during my child's bday I made a comment today to my mom and she got so upset and told me I'm just jealous of that person and other stupid comments how I need to get over it. She doesn't get the hurt I went through due to that yet somehow thinks it's wrong of me to feel how I feel . I think my mom only sides with her because my older brother that chick's long time bf helps my mom out financially . It's really stupid this is why I choose to be alone and isolated I'm tired of people in my life dismissing me and treating me like I'm nothing or I'm crazy for feeling how I feel about someone who came for me in that way. I just wanted to vent about this.