*... she takes a deep deep breath.* I really don't want to... But it's for the customer. I shouldn't judge her.

Well, it depends on what you want. We have many products for something of that nature. One that make a person cold and uncaring towards you, so they no longer have concern for how you act. Ones that make them think you've always been like that. Or even ones that make it so they act like how you are now, instead, and thus have no motivation to argue... There's many ways to do this. But it depends on your choice.