I found this about leaving or chaning to visitor within 150 days but I am not sure if that applies to her. Since she already has a new study permit of a different institution and doesn't plan to start studying there.I've never heard of the 150 days period. Is that from the old stud permit or her new NB study permit. If she doesn't attend school from the NB college/university, then that new study permit is not valid.
@Naturgrl any insight?
C. Changing institutions or changing programs of study at the same institution
https://www.canada.ca/en/immigratio...dents/study-permits/assessing-conditions.html