Board Thread:Lore Discussion/@comment-73.221.210.209-20150915184314/@comment-108.201.2.96-20150919040446

She could have knowledge of the Dragonborn during the First Era. She could also be aware of the Last Dragonborn's status, but just shrugs it off with disinterest. That, or she may not completely understand a Dragonborn's abilities and thinks you're performing some sort of bizarre magic to her. Whatever the case, it all goes to Bethesda for not applying that kind of function.