As a younger sister Jacey might not know exactly what the consequences are in the situation. If Jacey was older she could have been more scared because of what would happen. She also could have helped in that situation because she would have been stronger and also smarter in the way she helps. Jacey doesn’t have a lot of responsibilities in this situation because of her age. It is a possibility she would of had to get them out of the mess with Steve as a 50/50 deal. Being older means more responsibilities, being more worried about what happens and taking full blame for whatever happens. Being younger she knows Steve will get them out alive.