Not child related but relationship (with my mum) related

I’ve always had a strained relationship with my mum, I got pregnant at 21 whilst living under her roof and she did help me out with my daughter, I met someone else when she was 2 and we moved out when she was 5 from my mothers house to our own. I now have another little boy and a stable family for myself. My mum has always loved alcohol since I can remember, drinking allot mainly in the evenings, I remember her coming to me in the morning before she went to work asking if her breath smelled like wine and one night she had a bad breakdown when I was about 12/13 where she drove intoxicated and me and my dad had to follow her. But we would have arguments when she drank and she would call me terrible names and our arguments almost always got violent. My relationship with my mum is allot better now I’m out of the house but she still continues to drink 1/2 bottles of wine per night, you would never know as she isn’t like the normal alcoholic you would imagine but at night she becomes a different person, she’s nasty and aggressive, whenever I bring up that it upsets me and I want her to be healthy to see her grandkids grow up she gets defensive and brushes it off, how can I help her, has anyone ever had an alcoholic person, she’s lost a lot of people through being nasty through alcohol including her own sister who washed her hands after reiceveing abuse texts at night from her, I’m at a loss with it after years, it’s upsetting