They captured not a human child, but the offspring of a monster.

The offspring of intelligent beings. IN-TEL-LI-GENT! Not bears, although it would be a pity for a bear cub. In Xeen, races are divided into elves, humans, goblins, etc., while we have Arabs, Caucasians, Asians, and Europeans (or whatever the correct term is), which means that in Beslan, Arabs captured Caucasians – representatives of a different race. So, think about that, and think carefully.

Dogs belong to France, and dragons are not tame pets of dark elves.

What about stray dogs? Do they also belong to France? Dragons, in that case, belong to Jadame, and although Jadame does not have a single government, the actions of the dragon slayers could have affected the relations between Erathia and the dark elves – think about it, the dragon slayers came and started doing whatever they wanted, i.e., slaughtering dragons, and why wouldn't they then, when the dragons are gone, call themselves dark elf slayers and start a genocide of dark elves (they are dark, which means they are also not very close to the knights).