The "tail stall" theory is absolute and utter BS and anyone with the slightest aviation clue knows it. I'd be astounded if either of those two had the remotest idea as to what a tall stall is, much less what to do about it.

She had a gut reaction because something bad happened after she lowered the flaps, so she instinctively raised them to "fix" the problem. No way would she have completed the necessary logical leaps to diagnose a tail stall without discussing it with the CA or at least verbalizing what she was doing.