A little fun fact while watching Cohh doing a quest involving a Pesta i looked up some old Norwegian history i knew id learnt in school, and surely enough;
Theodor Kittelsen claimed to have met Pesta while he was traveling during his stay in North-Norway and he drew a picture of her which he then put in his book about the Black Death plague, this was in 1896 but came out in 1902.
She was pictured as a old woman dressed in black with a broom and a rake, If she showed up at a farm with the Broom everyone on the farm would die, if she brought the Rake some would survive.
Pesta on the stairs by Theodor Kittelsen.
So basicly its Norwegian Folklore at work