Even tho Katarina's last name sounds Dutch, she's actually Slovakian.
As for the match-up, Rosie's got that happy go lucky vibe with a bit of tomboyish energy that would serve her, and while Katarina seems more girly-girly and only into fashion stuff, her rough upbringing behind the iron curtain would come out and she'd pin Rosie down and angrily demand she submit.