AITAH-my dad got drunk and shouted vile things at me. After alot of back and forth I called up his mom (my grand mum) to tell her what’s happening. I was very triggered and in that anger I called her useless because she didn’t teach her son values. Mind you, this woman has never said a word to her son about how he treats us when he is drunk. She is blaming me for being the person who creates issues in the family and said i have a goodnight sleep after insulting her. I’ve been trying to call her to apologise (not justifying what I said but saying why it was wrong and why it was said).