Manipulation of result in TMBU Bhagalpur PG

Hi reddit My sister has been pursuing MA in English from TMBU. She has been consistently topping the University with good marks in all the semesters. We have received the final result today and her total addition of the marks is the highest in the University, but in one of the papers she has received 1 mark less than the passing marks, when other students who don't deserve it have received much higher marks. This seems like blatant manipulation by the University professors to promote their own preferred students. Please help us in finding the best course of action for her.