Merle, shes praying.

Merle, an innocent christian girl, living by herself in a simple home, going to a simple school.
Merle, something is following her.
Merle, i dont think its even her anymore, she has... changed.

A girl named Merle starts noticing herself become unsteady and woozy, her skirt starts riding up while she walks home from school and her buttons fly undone.
Is it the lord saying that she is craving sins, or is this something far worse than that?