I wished somehow you could fight the Queen and a Predalien. Maybe a cut scene would show you getting a Predator out of captivity, but all of a sudden it yells out and out comes a Predalien. You try to shoot it, but you fail. Before you confront Mother, she makes a trap and puts in a room with the Queen and a Predalien (the one you saw come out of your hunter's chest).
I'm still confused why a Predator would skull-rip their own kind.