NEW : Sister : Laura Ling `` skinny , '' Clinton struggling to talk because of isolation . On the last call , Laura Ling specifically requested that Clinton intervene . `` She said that in her opinion -- quote , unquote -- it would have to be President Clinton . NEW : Laura Ling told family , `` It would have to be President Lisa Ling , '' Euna Lee 's says . Laura Ling plans to detail what transpired , sister says . Laura Ling daughter keeps following her , Lisa Ling says .
NEW : Sister : Laura Ling `` skinny , '' Clinton struggling to talk because of isolation . NEW : Laura Ling told family , `` It would have to be President Lisa Ling , '' Euna Lee 's says . Laura Ling plans to detail what transpired , sister says . Laura Ling daughter keeps following her , Lisa Ling says .