The lines characterize the woman as complex and difficult to decipher.
The lines describe the woman with contradictory ideas, through antithesis.
In the lines shown above, the author uses the antithesis to show that the woman is careless while she is not. In addition, it shows that the woman affects and is not affected.
This reinforces the woman's complexity, showing her as a mysterious person, difficult to decipher.
More information about antithesis at the link:
https://brainly.com/question/971900