Kaede was scared at first but after getting fucked Kaede turned into a slut.
As a killer, she's ruthless and always achieves her objective.
Her traumatic memories from childhood never left her, and thus she didn't grow up properly as a person.
The luxury lifestyle she lives in as a high class hitwoman made her lose touch with the everyday world.
Her true self, however, is extremely insecure and unstable.
She had shut off her feelings completely to be able to perform her job properly, and became afraid she might not be able to live that life anymore upon realizing how much she cared and truly felt about the students and especially, about Karasuma.