You only saw, what the sim was giving to you. It did not reproduce the real behaviour of a real aircraft, as there is no reliable and tested data base available.
If you want to know details about it, then read the BEA final report concerning AF447. There is a lot of information in it concerning simulation and simulator behaviour and reliance outside the tested flight envelope.
Concerning the trim the simulator might have been in Alt Law with Autotrim available and might have dropped into Abnormal law during the excessive pitch, where autotrim is no longer available.