Also, it's a good thing they stuck with the films and didn't look at the novelizations of "Alien" and "Aliens" by Alan Dean Foster when it comes to how the xenomorph tracks (going from Jeyl's YouTube link). According to the novelization of "Aliens", one of the ways a Xenomorph can find you is that it has the ability to hear your heartbeat. There was a scene where Bishop, after he crawled through the tunnel to get to the colony transmitter, encountered one of the xenomorphs face to face, but it didn't notice him and went away because Bishop didn't have a heartbeat.
You know, that line of reasoning could still work. The Queen does go after Newt instead of the still active Bishop who's slowly crawling on the hanger floor. It doesn't have to be just the heart beat either. You could say that the heart beat in combination of other movement sounds that help the Xenomorph distinguish it's prey.
And this may just be coincidence... but the sound of heart beats is very prominent in the original ALIEN, especially when the Xenomorph is close.