Wow! I have never heard that.terriers shake as a matter of instinct to kill things, they are too small to take something down or have that really strong bite of something bigger but they can snap a neck or spine with a good shake and bash it on the floor a few times.
Also dogs instinctually go for the throat, and a lucky strike even from a small dog can open a vein or artery in the neck and its game over.
In the wild and in packs female dogs will lay over the throats of their males if threatened to try to protect them against aggressors, one of my dogs does this, she will try and sit up on your chest, and if she can lay over your neck when you're just sat watching TV.
Are you sure she just doesn't like your choice of program