"Surprising enough, I found myself sorry for both her and the audience, her because she obviously not the full shilling and the audience because of their having their evening fucked up"
I am pleased to hear it, during your last post it occurred to me that her lack of confidence might not have been helped by to quote you "Things got so bad that residents would ask the doorkeeper "is C... in tonight?", before they steeled themselves to come in." it is in my opinion possible that she picked up on this atmosphere and it made her more nervous.
I understand that handling that kind of situation is not easy, but maybe the residents should not have had that attitude either?
To return to the original post, perhaps what is needed are workshops on performance and workshops on how to improve performance when using crib sheets.
I have seen the occasional good performance with crib sheets so it is possible, I prefer to see people not using crib sheets and performing well, but it has to be preferable to see a good performance with crib sheets rather than a bad performance with crib sheet.