hii just turned 15 recently :/my parents often bring up the topic of divorce in front of me and my younger sister and a few weeks ago my father hit my mother for the first time. now my father avoids communicating with my mother and locks himself in his room when my mother begins to get mad. after watching my father avoid my mother this way multiple times i somehow learnt from this accidentally. today my 11 yr old sister woke up wanting to watch a christmas movie but we were slow at finding one and soon my mother starts scolding my father saying how he shouldve organised everything last night. my sister was annoyed and ranted about how she didnt do anything related to christmas and she was upset. while they were arguing me and my sister went back into our rooms and did our own things. when i heard no more commotion outside my room, i decided to make a cheeseboard for the family. then i remembered how my sister had said that she wanted to do something christmas/family related so i told her to come down with me to the kitchen so we could make food for the family. i unload all the ingredients and my sister begins eating the cheese and i tell her to wash fruits to give her a job so that she wouldnt eat everything before we started. she replied with a no. she said she didnt want to wash the fruit because she wasnt going to eat it. then she decided to toast some bread for herself and specifically told me that she was only going to cook for herself. i was annoyed at the fact that she didnt even understand the purpose of me dragging her into the kitchen to help me bring the family together. i tried to take the bread away from her but scratched her along the way. her leg somehow got a cut and she immediately ran up the stairs into my mothers room to snitch on what i had done. she tells my mother i scratched her and shows her leg but she doesnt say why i did it and how it was an accident. my mother, after just finishing arguing with my father is basically ready to explode with anger and she storms down the stairs into the kitchen and knocks the cheese, fruits, plates, everything i prepared off the table onto the floor. me, already annoyed at my sister, had to accept the fact that all my efforts had been wasted which i could not, so i stormed into my room and closed the door. 50mins later, i hear my sister screaming at my mother and my mother drags the entire christmas tree up the stairs and into my room. she chucks it into my room and leaves. i just accept it and leave it there. 20mins later my sister arrives outside my room and says look what youve done youre a disgrace. me originally having good intents to bring this family together hearing this was legit just adding more fuel to the fire and i could legit slap her right then but i didnt. instead i look outside my room and my room is the only room that got trashed and i dont even know why as i was the one that was actually trying to bring the family together. i am mad and annoyed so i pull the tree outside my room and block my door with it. another 30mins later my mother comes and chucks the tree back into my room however i told her to stop and she yelled at me and slapped me across the face. my brain was telling me to chuck it back out and i chucked the tree back out and she chucked the tree back in. she then began to chuck my clothes out of my room and also tried to chuck my blanket and my pillows out. i yelled at her to stop and she yelled back in my face. she tells me off for hurting my sister and tells me off for being not caring and tells me off for being a burden to our family. she tells me to get out of the house along with my father however i dont budge. she rages and leaves my room. my ungrateful sister once again being annoying tells me that none of this wouldve happened if i didnt scratch her and i tell her that none of this wouldve happened if she wasnt selfish and decided to only cook for herself. i also tell her her bratty attitude wont get her anywhere in life. literally i cant with this family anymore now there are cracked ornaments in my room and im bleeding from stepping on one of them while arguing with my mother.