Mental Torture by Mother

Hello, I am a 30M and have been brought up in a separated family by my mother. My parents separated when I was 2yr old. My mother is very possessive and had been physically abusive since childhood which I had neglected. She never let my dad to be in touch with me. Post 18, when I had contact with my dad she became super insecure and started throwing tantrums. I had been very transparent with my mother and kept taking care of her. For the past 5years, she has stopped working and I am taking care of all her expenses. For the past 4 years her mental torture has crossed all limits and I have been patiently handling myself. But now I feel this is triggering her to make things even Messier. She is delusional and unnecessarily creates things and creates tantrums, verbally abusive. She isn't ready to have a consultation with a counselor,not does she listen to anyone in family. I am fed up with the behaviour and can no longer keep up with this, as I feel there is no end to this. Can anyone please help me with the legal approach that I can take here to atleast lead a peaceful life going forward?