Mediator of Slavic Beings [Vertical]

Can You imagine our current world full of beings, demons and even gods that have been forgotten over time by people? But how one should know how to deal with them? Fight? Talk? Maybe some sacrifice will do? But guessing something that our ancestors were learning for centuries isn't very smart idea. That's why for the past 19 years Józefina has been learning about Slavic believes under the eye of her mother. But can she really save others, when she doesn't even know anything about the world?