I did something similar. Working 3 jobs and two of them had booked me to work on the same day and time. I got my dad to bandage my leg (use to work as a medic) borrowed my mums wheelchair and crutches turned up to the job that paid less and said I was in a sports accident and couldn’t work. It worked and I got a week off from that job with pay
What she did was wrong but cooler heads should prevail. Can’t she work something out with the university so that she can graduate? For instance, the department could make her take the class again. Or allow her to take the class at another university and transfer the credit in?