Everything becomes a chain of bad examples and habits, which is why it becomes very difficult for the person who wants to change the self-destructive pattern. It is difficult to play the role of father or mother when you did not have a good example of it, this is a delicate situation, there are all types of people, with thousands of different stories, are there parents who do not love their children? Yes, of course, there are parents who love their children but don't know how to show it? Yes too. I am glad that your mother recognizes her setbacks, accepting it is a big step, I hope you are well with her.