Ismene values more the laws that honoring her brother and helping her sister out. Ismene does not think she can stand against them and she isn’t strong enough for it. On page 689 Ismene says “Our own death would be if we should go against Creon. And do what he has forbidden! We are only women, we cannot fight with men, Antigone! The law is strong; we must give in to the law. In this thing, and in worse. I beg the Dead to forgive me, but I am helpless: I must yield to those in authority. And I think it is dangerous business to be always meddling.” Ismene does not have the courage that Antigone has to go against Creon which makes them complete opposites. Ismene is authoritarian who favors that laws more than other things.
Antigone and Ismene are two sisters with completely different values, Antigone values her family and will sacrifice her own like just to honor her brother but Ismene rather follow the laws and not go against anyone. Ismene is willing to leave her brother on the battlefield without honoring him and letting her sister bury their brother alone knowing what she’s getting herself into. Families may be the same in a way but each person has different beliefs and