Annie did this to herself. How are you a nurse and not know the consequences of walking around with a dead baby inside you for God knows how many days. GTFOH Annie, yes that was Karma sweetheart for all of the bad and terrible things you did to Reva, Blake and Fran.
She had to have been having pain and running fever for her to have went septic. And she wouldn't have been able to carry that long. Her body would've spontaneously aborted.