I'm glad you like it! And thank you for prodding me into doing some more world-building, because I hadn't ever thought about Aravis and Cor returning to Calormen but it's a wonderful idea and now I want to write it. :-)

(I suspect Corin plays up his unsuitability as an ambassador because he finds the job unspeakably boring and annoying. But I'm pretty sure even if he were trying his honest best, he'd be a disaster waiting to happen... at least in Calormen. In Narnia, on the other hand, people tend to like him. *wry*)