“I won’t apologize for performing medicine.”
Obviously, she knows there is something she needs to apologize for or she wouldn’t voice it, even as a denial. She is using the word medicine to convince herself of the banality of act and dodge the guilt, but I doubt it is working. She may be a sociopath, but in the core of her dark soul, she knows that she is also a monster.
You can see the stress and neurosis in her face.
She’s fooling herself but not very well and the toll is mounting up.