Beth is like this, just does not stop. Sometimes I have actually asked her for 3 minutes silence (she can't get past one) and I'm ashamed to admit I actually lost my temper with her at once because I was having trouble focussing on the road and got lost, but that was only once.
She even makes up songs (we can thank her dad for that).
Maybe if we stick my dd and yours in a room together they would cancel each other out - he he