The Kingdom of Fire and Ashes

A seemingly normal girl, Calida, is accused of doing the unfathomable; witchcraft. Calida then gets a death sentence for that, but not just any death sentence; it is death by dragon fire! But the dragon sets the village and the people who live there on fire instead. The amazing thing is that only Calida and one other person are alive. Calida and the dragon have become friends alright and are planning to make a fire dragon army but what will happen to the other person? Why are the making an army of fire dragons?