FONC- The co-pilot has chosen to absent herself from any public airing of her role in the accident. Other than what is stated in the report itself there is a huge hole in the information of what occurred in the cockpit particularly in the final sequences leading up to the ditching. The ATSB would have conducted an interview but a transcript of the interview is not legally allowed to be made public and is not subject to FOI laws.
Her reasons for staying silent can only be speculated on but IMHO this might have soemthing to do with it.
The copilot recalled being alone in the cockpit before moving to the main door and attempting unsuccessfully to open it. The copilot reported that the fuselage then tilted nose downward and that a quantity of equipment and baggage descended or rolled down the fuselage as it filled with water. The copilot abandoned the main door, swam up towards the rear of the fuselage, located an emergency exit door by touch, and exited the aircraft.
Which is at odds with this version:
The PIC reported checking that the copilot was responding before moving rearwards into the cabin and ascertaining that the main door was not usable (Figure 7). Continuing rearwards to the two emergency exits in the fuselage centre section, the PIC opened the port (left, looking forward) emergency exit, and exited as water flowed in through the door opening.
The CVR would clear up how the crew were responding to each other as the situation developed.
Both quotes would have been from the interviews that the ATSB conducted, bearing in mind that both pilots were recalling a traumatic event.
As far as Sunny's conspiracy theory is concerned, as good a guess as any.