I read all of your links and didn't find one that said that the F/O was a 300 "wonder" . All I could find is that she was 24 years old. Until you can substantiate that she did in fact have 300 hours, this conversation is not about low time pilots, it is about poor decision making skills. The captain is just as responsible if not more so than the F/O in this incident as he is the final authority as to the saftey of the flight.