This statement is an acknowledgement that the goal was not to get to supply, but to cause harm and advises you of her awareness of it.

The narcissist causes harm as a by product of getting supply and is unaware of the abuse. The psychopath is acutely aware of the harm they are doing, and therapists all too often fail to point this out because they don't like to tell people that dark triad personality types really exist. It's like telling your client that there are certain people out there that you absolutely should not date, which raises all types of questions sociologically. And its often better for patients to come to serious conclusions like that themselves, but the signs and difference need to be accessible so that people can avoid them in future.