Thank you! Okay, Rose has been in Portland since she was 10. Her dad was a navy man so she was born and lived in Hawaii for her first decade of life. Luckily he started to settle down with the moving once his younger kids came along (Ro's the second eldest, but it was only the eldest who moved around a lot!) so she's pretty much a Portland kid.
That babble aside, lol, they could have had friends in common or something? It's funny because Rose was married very young to a criminal. She's not at all interested in all that, she's always worked hard and stayed on the straight and narrow, but they could know each other via him. Maybe Bianca arrested him or something?