I'm going to a group dinner this week but a few people still haven't paid me back from the last one. It's been a while so should I bring it up or just let it go?

She's trying to maximize her airline miles by paying for more things on her credit card so this seemed like a no brainer until she didn't get paid back all the way. Conversations about money are no one's favorite but how you treat your money says a lot about how you treat yourself.