Originally Posted by
Charles Darnay
Sophocles uses Ismene to counter Antigone. She is the dutiful one who does not go against Creon and thus does not suffer the fate of Antigone. However, in Aeschylus' version, Ismene sings the funeral songs for both her brothers, just like Antigone - we do not have the final play in that cycle but it suggests that Aeschylus at least believed that she would have shared Antigone's fate.
There is also some mention elsewhere, I don't remember, of Ismene being killed by Tydius - one of Eteocles' soldiers.