If they'd just gone by the rules - the rule that says "Queens lay eggs" - she have an army of facehuggers to take out Wolf or clueless national guardsman. And if she gets shot - she gets shot. Too bad so sad. Wouldn't make much of a film, but their job is find solutions to those sorts of things. Not make shit up.
Instead they ditch huggers for... YES!!! f**kING BARFING!!!! AWESOMALITYNESS!!!!!!!