Petra Ral's Weak Heart

Doctors Levi and Hange have become the two most esteemed doctors in the area. However, when Petra Ral is rushed in by the emergency staff, Levi and Hange begin having trouble trying to return her health back to normal. Will they be able to save Petra before her heart fails altogether? A/N: This is my first fic so any reviews would be greatly appreciated :)