She hesitates a little, she really didn't mean to get so involved in the conversation. Just this and then she'll leave the girl be.

"Pale, the diamond. Ashen, the club. It's a...those two, the matesprit and kismesis, you kiss, these two, you wouldn't. Ashen is where you keep two people from hating each other in the wrong way or work as a go between to keep their relationship from failing or changing. And Pale, the diamond, where you keep each other out of trouble or make sure they don't do dumb things that get them killed."