sorry to be the devil's advocate here, pero considered ba gyud nga defamation tong gibuhat sa seller? kay by her terms (if the item is not bought within a couple of days after reservation then buyer shall be considered a bogus buyer), matawag gyud bitaw ug "bogus buyer" imong cousin.. i don't think it can be considered libel (written defamation) if true ang gipangyawit sa seller..
i'm not saying ha nga your cousin got what she deserved.. it's just that i'm not sure if you can really pursue a case against the seller..