When Vivian is reaching towards the window she uses her left arm, but when the camera cuts to show the reflection in the window it's her right arm in the foreground.
Herman Grole explains the legend of Doomsdorf Castle and says that in the sixteenth century Queen Mary of England used to punish Protestants by sending them to Doomsdorf to be dragged down to Hell. However, the castle is in Scotland, and Queen Mary ruled over England only. The kingdoms of England and Scotland had not been united at that time and she would have had no jurisdiction over Doomsdorf.
The supposedly ancient text that use read at the dinner table is written in modern English.