I'm sorry but I find your "get over yourself" comment very underserved. I do not think highly of my diving-skills, and I don't even try to hide the fact that I'm a very unexperienced diver.
Your position can be understood and justified, but let me highlight the situation from another point of view. If I took a CCR Instructor course with 25 dives under my belt, I'm sure I would learn a bunch from it and I'm sure my instructor would kindly point out my shortcomings during the class but probably outside observers would shake their heads in disapproval. But hey: who is to blame? I payed for it and I only want to get better and pursue my dreams of becoming a CCR instructor right after receiving my OW certification. The instructor on the other hand does everything in his power to guide me through the excercises and help me to get better. So why can't I take that class?
The job of an insturctor in my opinion also includes making sure that the student is up to the task before taking her money or at least before leading her into the cave (hence the prerequisites), and that girl is clearly not 10 dives away from possesing above-averag buoyancy control skills, which I believe should be essential for diving in this environment. I'm not questioning that she is a good teacher, but I don't think there is any other reason for allowing that girl to take that class other than money.
Anyways: if you think that crawling trough the tunnels is what an average diver would do in that situation, than I clearly made a mistake of pointing that out, pardon my harsh opinion and this topic can be closed... I meant that in an ironic way at first, but I can perfectly understand the instructor's decision even if it's contrary to the view I look at training in general.