Marilyn is a good person in this story because all she wanted to do was see her brother. so she went on board of a medical ship. the ship that Marilyn when on board of, cant hold any more weight than the amount that it has already. So if the captain wants to live, and deliver the medicine to the planet, then he is going to have to throw her off the board. Marilyn does not know that though, she thinks that she will only get fined.