There are multiple horrific details in this story I hardly know where to start. Just makes my skin crawl reading it. The part that bothers me the most was the instructor's insistence on forcing a malfunctioning regulator on the student, and even in knocking away the student's attempt to use a functioning one (her alternate).
If any of the other students are here on the board maybe they can put in their observations, even if it is only about the 'extra' lessons while geared up.
Lastly, Scott, run don't crawl to get your gf evaluated and treated if needed for PTSD (if not already done). You might consider such an evaluation for yourself. This had to extremely traumatic.