Conspirator, by C.J. Cherryh
Finally. I’ve been waiting for this one for a while. To remind me what was going on in the story, I reread Deliverer and loved it again.
Conspirator was worth waiting for. I am always amazed by how Cherryh makes me feel more comfortable with the extremely etiquette-conscious aliens and really embarrassed about the humans.
Here’s a little more detail I wrote about this series when I first picked it up.