The Demon Apostle by R. A. Salvatore
The demon dactyl has been defeated but not destroyed and as Elbyran and Pony pick up the pieces of their lives and those of the people of the land of Corona the dactyl seeks refuge at the heart of the Abillican church and throws Corona into a new crisis and forces Pony o face a nightmare betrayal. R.A. Salvatore has written a fantasy full of heartstopping violence, wild magic, sinister politicking and the warm strength of friendship.