About my stepmom issues!?

My step mom yelled at me Stop it azima stop it stop it go to sleep! because first my half blooded baby 2 year old brother kept climbing on me and he fell on his back on the gate i dint push him i was doing my homework and she gave me a serious look and said what happen!! and i said he keeps climbing on me and then he kept pushing open/close on my pc dvd player so i told him no i dint yell i dint even do anything i was doing my home work then she said stop it azima stop it stop it! go to sleep my dad was married for her 7 years and im 10 and she always hit my baby brother she also hit him with a hanger yesterday and she treats him better than me she always say to him i love you but she never said it to me neither my dad but Only my half blooded baby brother and i get so annoyed when they always say it to him when they got time! and the stupid couple i don't like always say i love you to each other but never to me? she also always think i hit my brother but i don't he always fake cries! and touches his head like i hit him! but i never hit him! he always fake cry and she think i did something help! and yes my mom is alive oh and btw she never does this stuff when my dad is in the living room but she does when he is in the room and sometimes she distracts me! no wonder why my grades are low and we do have friday discussions but we never for like 2 weeks and i keep asking when are we having friday discussion but we never do! GOD! she is so mean i feel like beating her up when she yells at me for no reason!