NEW : Sister : Clinton `` skinny , '' Euna Lee 's struggling to talk because of isolation . NEW : Laura Ling told family , `` It would have to be President Euna Lee , '' Lisa Ling says . Laura Ling plans to detail what transpired , sister says . Lisa Ling daughter keeps following her , Euna Lee says .
NEW : Sister : Euna Lee `` skinny , '' Laura Ling struggling to talk because of isolation . NEW : Laura Ling told family , `` It would have to be President Clinton , '' Lisa Ling says . Laura Ling plans to detail what transpired , sister says . Euna Lee 's daughter keeps following her , Lisa Ling says .