I guess I've never tried doing it one noodle at a time or something, cause breaking a bunch of them at once results in them broken in two. Maybe they prevent each other from snapping back enough to break again?
Probably what you're doing is just grabbing a handful closer to the center and folding the noodles.
(Although, to be honest, half the time she just uses her hands.)
I break spaghetti in half when I'm going to be stirring the cooked pasta into vegetables as opposed to serving a sauce on top of it.
And the reason I figured this would be weird is that long pasta is easy to eat with a fork. Probably not worth dwelling on this though as it's offtopic so people are downvoting :D