Generally speaking, when Capricorn is nice to you, it is simply nice to you, but as long as he doesn't like you. He will find your pain point. Cold violence is a minor problem.
Capricorn is boring. If you quarrel with him, he will never take the initiative to find the stairs. Even if you build him a ladder, he won't appreciate it.
Even if two people are wrong about one thing, do you think Capricorn people will take the initiative to find their own reasons? Of course not. Capricorn will only end the cold violence with you if you take the initiative to ease it.
A friend of mine, whose mother is Capricorn, has a serious family atmosphere and feels that he and his mother have nothing in common. Ideological feudalism, always beating around the bush. But his mother pays more attention to family values.
And Capricorn people are very enthusiastic about what they like and who they like. Although it is their nature to be cold. However, their personalities are also rigorous, which is a very good personality for a family. Besides, Capricorn people never make hasty decisions and are very single-minded.
Capricorn's love will increase with time. After he accepts a person and a family, his life will become very stable.
So your mother is Capricorn. Although you may get along coldly, your mother certainly loves you. You can try to communicate with him. Give him a sense of security and happiness and melt this iceberg.