Incidentally everything turned out ok. The east coaster (errr... actually maybe "midwest" in the east of the mississippi sense, I forget.) hosting the party offered to drive the person home and then come back, but at this point someone else (who didn't even know the person in question, and was from the west coast) agreed to go home rather than stay the night (which she was kinda undecided on). So everything ended up turning out well.

Someone who agreed with the west coast view on this would say "look it turned out ok, good thing no one made a big deal out of it."

Someone who agreed with the east coast view would say: "If it weren't for the east coaster having her back she'd have missed her plane. (Or paid $35 for a taxi)"