But in all seriousness

Carol Marcus refuses to be beamed away while Bones is still in danger, even though she’s risking her life terribly trying to save him

Carol Marcus attempts to save the lives of her fellow crew members by telling her father that if he wants to kill them he’ll have to kill her too

Carol Marcus tries to stop herself being transported off the Enterprise, even though staying on the ship would have meant certain death at that point

Carol Marcus is literally the sort of person who would rather die than live knowing she failed to save someone