well actually even if Dana was the australian uncle's daughter then Nick couldnt be in love with the cousin because Connect 3 (Jonas Brothers) arent brothers in the movie :) so they wouldnt be cousins or anything
Ugh I hate her and she seems like a bad influence on Joe,, but if he's happy then Im happy for him, and before everyone starts hating on them just try and be happy for two people who are in love :)
but im so happy he's gonna meet her now :)