Mother in Law s Behaviour

I am married for almost 20 months now. My mother in law s nature is weird. She keeps taunting me all the time.. In April 2019 there was batter so I started to make dosa so she came running and pushed me and started yelling that I should make idli.. Her behaviour for such a small thing made me really upset and I left the house and went to stay at my parents house (they had gone to native place so the house was empty)... Then my MIL also went to native place n I returned... But the verbal abuse kept on increasing... So I started to back answer as well.. In November 2019 she gave me very bad cuss word.. In March 2020 she hit me with a belan.... I discussed this with my parents, my husband, his elder brother, but everyone is asking me to adjust.. I am mentally disturbed because of this constant taunting... I am scared of her anger so I stopped talking to her in April 2020..and till date I avoid talking to her. All communication is done by my husband.. Today morning when I was in the kitchen she came and started taunting and that my parents haven't taught me anything but I kept quiet... I don't know what to do.. If I say or do anything then I will be blamed for not taking care of an old lady... But she keeps torturing me mentally... I don't know what to do.. Please help.