@sketchy333 yeah, not a plague named 'the black plague', but a disease simply called the plague. Can't think of what disease it might be then...
I am interested in how she is going to link the outbreak to be caused by civil war being likely.
@feha
It's either that the duchy to the southwest are knowingly sending in infected people, or the allocation of manpower and resources towards preparing for war caused overall health to suffer, or the warehouses full of biscuits made it a perfect breeding ground for rats.
She is indeed referring to the black plague. In the original, it's written as Pest, the name for the black plague in German(the dictionary said so at least).