But she did complete the diploma, so the point is moot.
Which is impressive. So for that she deserves congrats, But if she did it with a score of less than 30, that means that one or more subjects was a 4 of below. Less impressive. Regardless, as I’ve said, colleges can set their own policies.
Qualities of tour guides vary, as does the accuracy of their information, for better or worse. Their have been many threads on this subject. The student should still trust the college website first and foremost.