HERRO!

Keegan and Sibyl would know her. Keegan is BROS with Sam so would obviously know her through him, and their shared house, and he'd probably think she was awesome at the very least. If not on a pretty good friendly basis with her. Sibyl would know her from the brief time she dated Sam, and would be pretty friendly, but I'm not sure about anything more.

Casey probably would be like COOL HAIR and be nice and friendly, but he's also A LOT quieter than she is so there may not be much of anything pre-standing there.

Quinn... she is interested in Marina. She's gossipy, which is amusing sometimes. She tends to spill secrets, so she's useful for information. She's spunky. Quinn would only be kinda :| at the religious thing, but if Marina didn't always go on about it, Quinn could overlook it. So there's opportunity there. I can offer Quinn up for the sex part, or at the very least be on good terms with the girl, as Quinn would probably try to take advantage of the gossipy/loose-lipped tendency for fun information XD