She would protect herself. She basically told the guy to get off her protection detail. She could handle it herself. Sagara needs a f-ing gut transplant. He needs to find the words in that letter he needs to write. And write it again, and again. Until she reads and responds. Or just do something! That novel was depressing.
I think it's that she's gonna give him trouble by getting him to contact Sousuke for her, or take her to his superiors so she can find out what's happened to him. To help her find Sousuke, that kind of trouble.
But I don't really know. Lets bug the translator about it, jk
