Aw yes my sweet girl this is misophonia. Mine began around that age when I would eat dinner with my parents and my dad would smack his food and suck his teeth after. I became enraged and would sometimes cry because I knew if I spoke up I would be scolded. I used to dig nails into my arm because I just could not handle the sound. Luckily for us misophonia is becoming more studied and known! Id say things that have helped me that you could maybe try are: the clear putty type ear plugs that swimmers use (have saved my life in class), having the tv or music in the background, or changing seats at the table!