I think we've really upset mom

Me and my brother have been fighting the past 2 weeks. I'm 17 he's 14. We were fighting today because he drank the last of my orange juice so I called him a waste of space and he called me a slut so I got on top of him(he's tall) and started yelling and hitting him. Mom came and threw me off of him a d yelled "I AM SICK OF YOU TWO!!! I'VE BEEN GOING THROUGH HELL BUT YOU GUYS DON'T CARE. YOU CANT EVEN MAKE MY LIFE A LITTLE EASIER AND GET ALONG!!! IT'S BEEN FIGHTING LEFT AND RIGHT AND YOU DON'T CARE THAT IM SICK OR HAVING SO MUCH FINANCIAL STRESS TO FEED YOU UNGRATEFUL CHILDREN!!! JUST FUCKING STOP!!!" Then she went to her room to cry... We pushed her overboard...