After another few days (as long as she never removes the ring), Laura Ferguson would be what she perceived to be the typical black woman.
Laura had a very narrow view on what black culture was like. She grew up in a completely white Baptist church, a white neighborhood, a white school, and only had white friends, even in college. Even the church she attended now didn't have any blacks. There was one Latino woman, but that was as far as the minorities went at her church.
She only had a glimpse of what black culture was like, and that glimpse told her that they were a bunch of trashy foul-mouthed street thugs and sluts, getting all high on drugs during the day and whoring at night. To Laura, that was sinful behavior.
Of course, not all blacks were like that, but Laura couldn't really see the truth, when she only saw a small part of the big picture.
So the rune ring chose to turn her into a black woman. But not just any black woman. The ring would slowly turn her into the type of black woman that she hated ... a trashy foul-mouthed ghetto whore. And everything within five to ten feet of her would slowly change as well to reflect that lifestyle.