He is literally the son of a whore - mom died when he was four, so how long she's known him would determine what she knows.<br/><br/>The city guard essentially took him in and he grew up running errands for them, carrying a spear when they were short a man, that sort of thing.  If she'd ever encountered a city guard, it could have been him.  Maybe he was part of the squad that came to check out the 'rampaging lion' and found her being praised as a hero.