It’s an incredibly physical performance, and the lack of dialogue for the first two-thirds of the movie allows her to slowly hint at a deeper intelligence hiding underneath her vicious exterior.
Much of the strength of X-23 comes from Dafne Keen’s non-verbal portrayal of the character.
This just goes to show how much a character can change throughout a film’s development, and I think it’s safe to say that the folks behind Logan made the right call.
By taking the restrained approach, the film allowed itself to take its time and reveal her intelligence and humanity more slowly, and in a way that felt far more natural.