What can i do about my mom?

my mom made my sister move out, my brother, and my dad! so its just me and my other sister i am 11 and my sister is almost 16! my sister hates my mom and they always get in fights. my sister really wants 2 move out when she is older and i do 2. i dont really like my mom ( at times i do) but she is always in a bad mood, yellin screamin, cryin or complain. just now my mom yelled at my sister! HERE'S WAT HAPPENED: MY SISTER AND I WERE HUNGRY SO MY SISTER CALLED ME DOWN 2 GO AND LOOK FOR A CHINESE MENU SO WE CAN ORDER. WE LOOKED EVERYWHERE FOR IT BUT COLDNT FIND IT! SO THEN I WAS LIKE I CANT FIND IT! AND MY SISTER WAS LIEK TELL UR MOTHER! ( ME AND MY SISTER FIGHT SO MUCH AND THATS PART OF THE REASON MY MOM IS LIKE this AND SHE HAS GUYS COME OVER AND SNEAKS OUT and then gets caught and does it again) my sister then said well tell ur mother! so my mom was like say that again and i will show u wat a mother is like! ( go 2 what can i do about my mom 2 2 see rest of story) and please help