Jill & Rapunzel
For someone like Rapunzel, she didn't know what Prom was until she heard Archie's pitch for it all. Still, she didn't know much about it, but she did manage to find a fancy dress and have her hair all braided up and sparkly, too.
Still, she didn't know much about the cultural norms of prom, so she kind of was at the side. And dancing with strangers seemed rather odd. And probably something Mother would disapprove of. But at least someone else was there.
"That's a pretty dress you have on." She told the girl in question.