So the daughter, being the smartest character, realizes that this is all Yellow Jacket Man's fault and his goons kidnap her and kill her dog, the greatest crime in this movie.
Yellow Jacket Man is about to sexually assault her. Then the Yeti breaks down the wall to rescue her and her brother; the goons run away (taking the little brother), and we get a sad camera pan over the dying dog; the Yeti screams in mourning before leaving the building (which explodes).