Here's me, trying to pimp out poor Roslyn. Girl needs a man!
She's best friends with Minnie so if she ends up his Madame Mim, he'll probably see a lot of Ros, though not hear because she's very shy. Depending on when he started teaching (I suck at math and dates and shit) he may have had her as a student when she was a senior in high school.
It's a thought. I need someone who's not gonna use her like Arthur's gonna :P