On three distinct occasions, the First Officer performed PF tasks without asking. Pitch mode, Flap retraction, and condition levers. She had a great deal more time in type, (Didn't everybody?), was there a tacit arrangement whereby she would assist in the flying? I sense that with the Captain's inexperience, the Command duties may have been "shared" in some makeshift, "intuitive" fashion. He didn't correct her, were they flying as a "committee"?
At Stick Pusher "Pull" was she helping? Or was she wondering what he was doing? With a "blended" command, things can get real dicey.