TIFU (I didn’t) by insulting the cousin who used to bully me infront of her in-laws

so hello I’m 17F
my cousin 28F is gonna get married in like 3 months now and shes the reason i always cried and self doubted myself… she is a monster. she used to bully me since I was like 10.. always commenting on everything… it was very very weird as I was only 10 at the time and it really got to me because I liked her. so one day the bullying got soo intense and I started crying out loud and she started shouting on me even more and when i tried to run away she yanked my hair and pushed me on the floor and came into the room and locked it then she slapped me across the face multiple times and shouted and on and on. her mother wasn’t in city at the time and her father didn’t care enough to get out and see what’s up…. so her brother walked me home…. andd and andd my sibling was also there but didn’t say a word and after coming home, she blamed me, she told me how could I leave like that.. i was 12 at the time. omg i hate recalling all that…
so I told my mom and she didnt do anything about it because my cousin’s mother is my mother’s older sister (sibling) and very dominant and my mother is very sweet and can’t handle an argument.. but she should have defended me.
so onto a week ago.. before marriage, in our culture the whole families get together… so we all were sitting together..
so the groom’s brother told my cousin (marrying one) that she’s soo nice and bla bla bla. and that was my moment to shine.. i laughed loudly and said ‘did you not tell them the incident when you yanked my hair, beat me because you were bored? and yeah also when I was 12 or or or did you not tell them how you used to bully me every since day since I was 10. ‘ OR ‘didi aapne inko yehh nahi bataya jabb aapne mere baal khiiichke mujhe niche gira diya tha, itna maara thaa kyuki aapko or koi kaam nhi tha?? or yeh b nahi bataya kii aap mera har din mazak udaake mujhe ghr bhejti thi??’
the room fell dead silent, but it was broken by my siblings giggling and my cousin…… her expression of pure fury but she didn’t say anything and I smiled at her…
then after that a lot of calls horrible names but i couldn’t care less..
im so happy
☺️🤷🏼she got it onto herself. lol

TL;DR: i insulted my bullying cousin infront of her in-laws