Howdy! Let's see, I've got three kids and we can plot for all of them!
First there's Alfie. I'd say they know each other quite well because they're both music majors and both seniors, so I'd think they have a lot of classes together. He's sometimes in his own (drug-induced) world, but he's friendly enough. He'd try to get through to her.
Darcy is in the same year and probably had some core classes together. She's really free spirited and liberal in her thinking, so I think they could be good friends!
Last I've got Sara. She's an 11th grade dancer, and she's kind of eccentric but really fun. I'm not sure what interaction they'd have, but if you have any ideas, let me know!