The bond between a mother and a child is a bond like no other. Even before birth, the mother is the protector, secret keeper, and provider for the child. And this bond is usually secured throughout life. But some children are not raised with secure bases and do not have this kind of bond. The only ways that these two different kinds of children could change their relationship is a traumatic experience. Going through something great or terrible with another person is one of the most relating experiences that can happen. And these experiences can bring a growing or grown up child closer or farther away from their mother in the way that they respond to it.
An old Chinese proverb says "it is harder to move a mountain than a man's personality." And for the most part, I agree with this. It would take something truly catastrophic to so drastically change the outlook of a child. However, there are other likely ways that a child's personality could change. Gradual change could be achieved by a small change in the parent's attitude that, over time, has a toll on how the child behaves.