Providing alcohal to a 14-year-old is both against the law and is also negligent; therefore, the boy might be liable (he is 18, so you should be able to sue him). In addition, if he obtained the alcohal from his parents and/or it was served to your daughter at their home while they were around, it may be that they are liable, too.It would be worthwhile for you to discuss this matter in detail with an attorney, to see what your rights are.