@fishtwentyfive so break down all those double negatives. as you said "if one does not know she knows nothing" what is that saying? one knows she knows something??
There is no double negative. In the antecedent of ... which will eventually take the double negative; we can only accept ... she knows nothing," with a double negative and arriving at an ...
Hate to say it, but... I have no set way of bubbling. I kind of go by whatever method seems natural at the moment. But I always do a quick little double check matching answer and question #.