User blog comment:Evans0305/BioShock Infinite gameplay videos/@comment-1500935-20110709213012/@comment-939754-20110710011530

Elizabeth does have a body type prone to requiring that fashion of protection primarily. And she does use Sky-Lines. Booker tells her to follow when he gets on one, and then right after you see her up by him, so you can tell she followed. It's odd you never get to see her using it, as it was always off camera.