Question about a scene on the movie grease?

I’m just trying to share a post for fun.

There was always a scene in the movie Grease that I always had trouble understanding.

So when everyone is at the bonfire Rizzo decides that she wants Sandy and Danny to meet each other. I love Rizzo but I never understood her intentions.

Did she make them meet because she genuinely wanted to do something nice or did she know Danny was gonna act like an ass to her in front of everybody? If she did, did she want Sandy to see what Danny is really like to save her or embarrass her?