`` i 'm sorry , '' he said , his voice not sorry at all , `` but twelve is the limit . '' it sort of goes hand in hand with nervous . '' `` that 's right , '' he whispered to her . like , what 's going to be happening and what i need to wear ? '' he locked his jaw , trying to keep the tears from falling . she makes a muffled sound , then goes still , frightened and tense . for sleeping space on a ship , he knew it was large . 