Betty gets Minerva Hip Spica Body Plaster Cast for better grades (Part IV of the story) (Patreon)

Betty passed the exams with the extra points she got for wearing a long arm plaster cast, and everything was fine until the next one!  
This time she is 10 points short! Pam comforts her that she will get extra points if she reports as a patient during the practical training.
Betty has doubts because the Head Nurse is very strict. She will definitely come up with something complicated!
What will Betty get herself into again, to finally finish her school and become a Nurse?