The dragon moved nimbly backward, enveloping the Dragonslayer in a cloud of black vapour. Then it charged again. Jackie saw the dragon's neck at full extension, curved to the left. She slashed down with her sword, the blade passing between two vertebrae. The dragon stopped moving. Jackie and the Dragonslayer looked at each other. Jackie began to tremble.
If this was dragonslaying, you could keep it.