When Dana turned eighteen, her parents started using her to get discounts. They could get a quick 15% off from the electrician, 20% from the plumber, and 30 from the pizza delivery guy.
One contractor dry-walled an entire room just to get to take her back to his place for a month. He fucked her ass and made her suck him clean every day, made her eat out other girls while he fucked their asses, and even made her drink his piss a few times.
It was a pretty easy way to get discounts for her parents, so she was just happy to help.