The uncommanded flap action to me may speak of a confused cockpit relative to leadership and interpersonal command flow. The pilot, though senior in total time, was 'new' to this type, F/O had more time in this a/c. She may have been a helpful 'senior in type' F/O, much like an instructor may allow some mistakes, but 'act in' when the 'student' is 'overwhelmed'. What is confusing is the lack of 'confidence' on the F/D, the F/O's statements to that effect, and the crumbling skills of the PF.
Having been young once, I can relate to youth and its aspirations.
Being old, I can relate to a significant mid life career change.
On landing, Ms. Shaw was too young to Rent an automobile.
Mr. Renslow was perhaps 25 years past a more common career benchmark.
Each of them were flying a highly complex a/c full of people.
Neither were making a decent living, and one was demonstrably ill, both were fatigued. There is a problem.