He's asking to be left alone, and in doing so being both a jerk, and completely and unutterably WRONG in his approach.
Well, that has been his M.O. since what? 1988? I need a flow chart next to my keyboard. Just being himself, really.
I hate the arc as a whole, for what it's worth. But I like this story.
I don't think he's BEING especially nice. He IS trying to get what he wants. And he's moderately creepy doing it. As is his way. But wouldn't label it being emotional blackmail here, personally. She doesn't seem like she's been emotionally blackmailed--just goes on about her business and solves the mystery and acts like a bat.